How the atomic size vary in a group and across a period? Explain with suitable example.

How the atomic size vary in a group and across a period? Explain with suitable example.
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How the atomic size vary in a group and across a period? Explain with suitable example.
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Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

Description : Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

Last Answer : Define ionization enthalpy. Name the factors on which ionisation enthalpy depends? How does it vary down the group and across a period?

How does electro positivity and electro negativity vary across a period and down a group?

Description : How does electro positivity and electro negativity vary across a period and down a group?

Last Answer : Electro positivity decreases along a period and increases down the group. Electro negativity increases a period and decreases down the group. Electro positivity

How does ionisation energy vary across a period and down a group?

Description : How does ionisation energy vary across a period and down a group?

Last Answer : Ionisation energy increases along a period and decreases down a group. Ionisation energy decreases with increase in the atomic size. Ionisation energy Increases Across a period (Left to right)

How does valency of an element vary across a period?

Description : How does valency of an element vary across a period?

Last Answer : How does valency of an element vary across a period?

Why does atomic size (radius) decrease across a period?

Description : Why does atomic size (radius) decrease across a period?

Last Answer : The atomic radius decreases along a period because the atomic number increases by one, but the additional electron goes to the same shell.There is no change in the number of shells but more ... in closer to the nucleus which leads to contraction of the atom and thus decrease in atomic size

Proceeding across a period in the Periodic Table, what atomic size trend is observed?

Description : Proceeding across a period in the Periodic Table, what atomic size trend is observed?

Last Answer : ANSWER: ATOMIC SIZE DECREASES

(a) What are ‘groups’ and ‘periods’ in the ‘periodic table’? (b) Two elements M and N belong to group I and II respectively and are in the same period of the periodic table. How do the following properties of M and N vary? Sizes of their atoms Their metallic characters Their valencies in forming oxides Molecular formulae of their chlorides -Science

Description : (a) What are groups' and periods' in the periodic table'? (b) Two elements M and N belong to group I and II respectively and are in the same period of the periodic ... Sizes of their atoms Their metallic characters Their valencies in forming oxides Molecular formulae of their chlorides -Science

Last Answer : (a) The vertical columns in the periodic table are called groups'. The horizontal rows in the periodic table are called periods'. (b) M' and N' belong to same period but group I ... oxides. Valency goes on increasing first and then decreases. MCI, NCI2 are molecular formulae of their chlorides.

How does electro negativity vary down the group 17 and why? How does it vary from left to right in the period? Name an element having highest electro negativity.

Description : How does electro negativity vary down the group 17 and why? How does it vary from left to right in the period? Name an element having highest electro negativity.

Last Answer : Ans. Electro negativity decreases down the group due to increase in atomic size. It increases along the period from left to right due to decrease in atomic size. Fluorine (F) has highest electro negativity.

How does metallic nature vary along a period and down a group?

Description : How does metallic nature vary along a period and down a group?

Last Answer : Metallic nature decreases along a period and increases down the group. Example: In the 14 th group there are elements carbon, silicon, germanium, tin and lead. Carbon and silicon are non-metals, tin and leads are metals.

Taking first period and 17 th group of the periodic table, write gradation of properties with respect to the following: a) atomic size b) Ionisation energy c) electro positivity and electro negativity.

Description : Taking first period and 17 th group of the periodic table, write gradation of properties with respect to the following: a) atomic size b) Ionisation energy c) electro positivity and electro negativity.

Last Answer : The elements of 1 st period are hydrogen and helium. a) Atomic size of hydrogen is larger then that of helium because atomic size decreases across a period. b) Ionisation energy of helium ... higher as it increases down the group. Electro negativity of fluorine as it decreases down the group.

Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same (A) Period increases (B) Period decreases (C) Group increases (D) Both 'b' & 'c'

Description : Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same (A) Period increases (B) Period decreases (C) Group increases (D) Both 'b' & 'c'

Last Answer : Option D

Atomic radius _moving from left to right across a period?

Description : Atomic radius _moving from left to right across a period?

Last Answer : Decreases

In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Last Answer : (1) decreases Explanation: The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. It tends to decrease across a period from ... usually increases while going down a group due to the addition of a new energy level (shell).

As one goes across a period in the periodic table, the ionization energy generally increases for one of the following reasons. Is it because of the increasing w) atomic radius x) melting point y) nuclear charge z) density

Description : As one goes across a period in the periodic table, the ionization energy generally increases for one of the following reasons. Is it because of the increasing w) atomic radius x) melting point y) nuclear charge z) density

Last Answer : ANSWER: Y -- NUCLEAR CHARGE

In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Last Answer : increases

How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Description : How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Last Answer : Ans The atomic and ionic radii of the alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods. This is due to the increased nuclear charge in these elements. Within the group, the atomic and ionic radii increase with increase in atomic number.

How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Description : How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals 

Last Answer : The atomic and ionic radii of the alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods. This is due to the increased nuclear charge in these elements. Within the group, the atomic and ionic radii increase with increase in atomic number.

When a radioisotope undergoes beta minus decay, does its atomic number: w) increase x) decrease y) remain the same z) vary depending on the element involved

Description : When a radioisotope undergoes beta minus decay, does its atomic number: w) increase x) decrease y) remain the same z) vary depending on the element involved

Last Answer : ANSWER: W -- INCREASE

Which of these will likely vary most across different cultural contexts?

Description : Which of these will likely vary most across different cultural contexts?

Last Answer : Celebrating a wedding

For steady ideal fluid flow, the Bernoulli's equation states that the (A) Velocity is constant along a stream line (B) Energy is constant throughout the fluid (C) Energy is constant along a stream line, but may vary across stream lines (D) None of these

Description : For steady ideal fluid flow, the Bernoulli's equation states that the (A) Velocity is constant along a stream line (B) Energy is constant throughout the fluid (C) Energy is constant along a stream line, but may vary across stream lines (D) None of these

Last Answer : (C) Energy is constant along a stream line, but may vary across stream lines

According to Bernoulli's equation for steady ideal fluid flow (A) Principle of conservation of mass holds (B) Velocity and pressure are inversely proportional (C) Total energy is constant throughout (D) The energy is constant along a streamline but may vary across streamlines

Description : According to Bernoulli's equation for steady ideal fluid flow (A) Principle of conservation of mass holds (B) Velocity and pressure are inversely proportional (C) Total energy is constant throughout (D) The energy is constant along a streamline but may vary across streamlines

Last Answer : Answer: Option D

The Auger boring method is not suitable for (A) Very hard soil (B) Cemented soil (C) Vary soft soil (D) All the above

Description : The Auger boring method is not suitable for (A) Very hard soil (B) Cemented soil (C) Vary soft soil (D) All the above

Last Answer : Answer: Option D

During secular variation of magnetic meridian at different places (A) Range of oscillations is constant (B) Period of oscillation is constant (C) Range and period of oscillation both vary (D) Period of oscillation only varies

Description : During secular variation of magnetic meridian at different places (A) Range of oscillations is constant (B) Period of oscillation is constant (C) Range and period of oscillation both vary (D) Period of oscillation only varies

Last Answer : (C) Range and period of oscillation both vary

What group appears to have members of the largest atomic radii for a given period?

Description : What group appears to have members of the largest atomic radii for a given period?

Last Answer : This is the group 1.

a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Description : a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Last Answer : (a) The repetition of same properties after definite interval is called periodicity in properties. (b) It is because they have same valence electrons therefore, have similar properties. (c) ... to right in a period because atomic size goes on decreasing and effective nuclear charge increases.

ECE Board Exam March 1996 One type of pulse communications system uses pulse that appear as a group, and which vary in number according to the loudness of the voice. This type of pulse modulation is called A. pulse duration modulation B. pulse amplitude modulation C. pulse code modulation D. pulse position modulation

Description : ECE Board Exam March 1996 One type of pulse communications system uses pulse that appear as a group, and which vary in number according to the loudness of the voice. This type of ... A. pulse duration modulation B. pulse amplitude modulation C. pulse code modulation D. pulse position modulation

Last Answer : A. pulse duration modulation

In research, something that does not "vary" is called a ___________. a. Variable b. Method c. Constant d. control group

Description : In research, something that does not "vary" is called a ___________. a. Variable b. Method c. Constant d. control group

Last Answer : d. control group

Do stars vary greatly in size and color only.?

Description : Do stars vary greatly in size and color only.?

Last Answer : No. Stars vary in lots of aspects, including:* Diameter* Mass* Color (and the related surface temperature)* Chemical composition* Density (related to mass and diameter)* Brightness

What can cause different fonts with the same point size to vary in width?

Description : What can cause different fonts with the same point size to vary in width?

Last Answer : Feel Free to Answer

Do stars vary greatly in size and color only.?

Description : Do stars vary greatly in size and color only.?

Last Answer : No. Stars vary in lots of aspects, including:* Diameter* Mass* Color (and the related surface temperature)* Chemical composition* Density (related to mass and diameter)* Brightness

In an absorber, HETP does not vary with the (A) Flow rate of liquid (B) Flow rate of gas (C) Type and size of packing (D) None of these

Description : In an absorber, HETP does not vary with the (A) Flow rate of liquid (B) Flow rate of gas (C) Type and size of packing (D) None of these

Last Answer : (D) None of these

The extent of audit planning will vary according to the following: a. Auditor’s experience with the entity. b. The nature and complexity of the audit engagement. c. Size of the entity. d. All of the above

Description : The extent of audit planning will vary according to the following: a. Auditor’s experience with the entity. b. The nature and complexity of the audit engagement. c. Size of the entity. d. All of the above

Last Answer : All of the above

A flood can vary in: (a) size (b) speed of water flow (c) duration (d) all of the above.

Description : A flood can vary in: (a) size (b) speed of water flow (c) duration (d) all of the above.

Last Answer : (d) all of the above.

A flood can vary in: a) Size b) Speed of water flow c) Duration d) All of the above.

Description : A flood can vary in: a) Size b) Speed of water flow c) Duration d) All of the above.

Last Answer : d) All of the above.

Gravels (A) Are cohesionless aggregates (B) Vary in size between 2 to 20 mm (C) Never swell when they come into contact with water (D) All the above

Description : Gravels (A) Are cohesionless aggregates (B) Vary in size between 2 to 20 mm (C) Never swell when they come into contact with water (D) All the above

Last Answer : Answer: Option D

Cooling towers vary in size from small roof-top units to very large hyperboloid structures that can be up to ____meters tall and _____ meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long. a. 200&100 b. 100&50 c. 200&50 d. 200 &150

Description : Cooling towers vary in size from small roof-top units to very large hyperboloid structures that can be up to ____meters tall and _____ meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long. a. 200&100 b. 100&50 c. 200&50 d. 200 &150

Last Answer : 200&100

Cooling towers vary in size from small roof-top units to very large hyperboloid structures that can be up to ____ meters tall and _____ meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long. a. 200&100 b. 100&50 c. 200&50 d. 200 &150

Description : Cooling towers vary in size from small roof-top units to very large hyperboloid structures that can be up to ____ meters tall and _____ meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long. a. 200&100 b. 100&50 c. 200&50 d. 200 &150

Last Answer : a. 200&100

Cooling Towers vary from size of 40 metres to a) 400 b) 120 c) 450 d) 560

Description : Cooling Towers vary from size of 40 metres to a) 400 b) 120 c) 450 d) 560

Last Answer : a) 400

What is the purpose of either 'setpoint module' (6000F090/030) shown in the illustration? EL-0094 A. Program the 'signal conditioner' as to how to vary its input. B. Supply 0 - 10 volts to the 'signal conditioner'. C. Initiate logging of measured information at set intervals; for example, each hour. D. Obtain an input from the 'signal conditioner' and, if outside set limits, signals the 'annunciator'.

Description : What is the purpose of either 'setpoint module' (6000F090/030) shown in the illustration? EL-0094 A. Program the 'signal conditioner' as to how to vary its input. B. Supply 0 - 10 volts to ... . Obtain an input from the 'signal conditioner' and, if outside set limits, signals the 'annunciator'.

Last Answer : Answer: D

The criteria for evaluating quantitative information vary. For example, in the audit of historical financial statements by CPA firms, the criteria are usually: a. Generally accepted auditing standards. b. Acceptable financial reporting framework c. Regulations of the Securities and Exchange Commission d. Regulations of the Bureau of Internal Revenue

Description : The criteria for evaluating quantitative information vary. For example, in the audit of historical financial statements by CPA firms, the criteria are usually: a. Generally accepted auditing ... Regulations of the Securities and Exchange Commission d. Regulations of the Bureau of Internal Revenue

Last Answer : Acceptable financial reporting framework

The criteria for evaluating quantitative information vary. For example, in the case of an independent audit of financial statements by CPA firms, the criteria are usually the: a. Philippine Standards on Auditing b. Philippine Financial Reporting Standards c. National Internal Revenue Code d. Securities and Exchange Commission Regulations

Description : The criteria for evaluating quantitative information vary. For example, in the case of an independent audit of financial statements by CPA firms, the criteria are usually the: a. ... Financial Reporting Standards c. National Internal Revenue Code d. Securities and Exchange Commission Regulations

Last Answer : Philippine Financial Reporting Standards

How many of the following properties increase down the group for nitrogen family (a) Atomic size (b) Acidic character of oxides (c) Boiling point of h

Description : How many of the following properties increase down the group for nitrogen family (a) Atomic size (b) Acidic character of oxides (c) Boiling point of h

Last Answer : How many of the following properties increase down the group for nitrogen family (a) Atomic ... Metallic character (g) Basic character of hydrides

How many of the following properties increase down the group for nitrogen family (a) Atomic size (b) Acidic character of oxides (c) Boiling point of h

Description : How many of the following properties increase down the group for nitrogen family (a) Atomic size (b) Acidic character of oxides (c) Boiling point of h

Last Answer : How many of the following properties increase down the group for nitrogen family (a) Atomic ... Metallic character (g) Basic character of hydrides

Which group contains the elements with largest atomic size?

Description : Which group contains the elements with largest atomic size?

Last Answer : First group

Why does atomic size of an atom increase down the group?

Description : Why does atomic size of an atom increase down the group?

Last Answer : In moving down a group, new shell is added to the atom. There is an increase in the energy level. The distance of the outermost electron from the nucleus increases. This increases the size of the atom down the group.

Discuss the significance of having clause with group by statement with suitable example. -Technology

Description : Discuss the significance of having clause with group by statement with suitable example. -Technology

Last Answer : Sometimes we do not want to see the whole output produced by a statement with Group By clause. We want to see the output only for those groups which satisfy some condition. It means we want ... the total amount of all type of transactions, it will only display the total of credit transactions only.

1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Description : 1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Last Answer : a) It is because nuclear charge increases due to increase in atomic number, therefore, force of attraction between nucleus and valence electrons increases, i.e. effective nuclear charge increases, hence ... element is ‘F’ because it can gain electrons easily due to smallest atomic size.

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Description : A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap? (a) Acidic (b) Alkaline (c) Low refractive index (d) Absence of sugar

Last Answer : (b) Alkaline

A 400V/100 V, 10 KVA two-winding transformer is reconnected as an auto-transformer across a suitable

Description : A 400V/100 V, 10 KVA two-winding transformer is reconnected as an auto-transformer across a suitable voltage source. The maximum rating of such an arrangement could be  A) 50 KVA B) 15 KVA C) 12.5 KVA D) 8.75 KVA

Last Answer : A 400V/100 V, 10 KVA two-winding transformer is reconnected as an auto-transformer across a suitable voltage source. The maximum rating of such an arrangement could be 50 KVA

Why does the exact balance of power between the Centre and the State Governments vary from one Federation to another ? Explain with two examples. -SST 10th

Description : Why does the exact balance of power between the Centre and the State Governments vary from one Federation to another ? Explain with two examples. -SST 10th

Last Answer : The exact balance of power between the central and the state government depends mainly on the historical context in which the federation was formed. There, are two kinds of routes through which federations have been formed : (i) Coming Together Federations (ii) Holding Together Federations