Define : a. Ionic radius b. Electronegativity

Define : a. Ionic radius b. Electronegativity
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Define : a. Ionic radius b. Electronegativity
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Define the following : Atomic Radii , Ionization Energy , Electron Affinity , Electronegativity.

Description : Define the following : Atomic Radii , Ionization Energy , Electron Affinity , Electronegativity.

Last Answer : Ans :(1) Atomic Radii : An atom does not have strictly defined boundaries so it is impossible to determine the exact radius of an atom but theoretically it is defined as half the distance between the ... in Period : It increases from left to right in a period due to increase in nuclear charge.

In which of the following complexes the metal ion has the lowest ionic radius ?

Description : In which of the following complexes the metal ion has the lowest ionic radius ?

Last Answer : In which of the following complexes the metal ion has the lowest ionic radius ? A. `[Ti(H_(2)O)_(6)]^(2+)` B. `[V ... (2+)` D. `[Mn(H_(2)O)_(6)]^(2+)`

Statement I Sulphate is extimated as `BaSO_(4)`, not as `MgSO_(4)`. Statement II Ionic radius of `Mg^(2+)` is smaller than that of `Ba^(2+)`.

Description : Statement I Sulphate is extimated as `BaSO_(4)`, not as `MgSO_(4)`. Statement II Ionic radius of `Mg^(2+)` is smaller than that of `Ba^(2+)`.

Last Answer : Statement I Sulphate is extimated as `BaSO_(4)`, not as `MgSO_(4)`. Statement II Ionic radius of ... false. D. Assertion is false but Reason is true.

From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. (c) The element with smallest ionic radius. (d) The element with six electrons in the valence shell. (e) The element which is a liquid at room temperature. (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

What is electronegativity ?

Description : What is electronegativity ?

Last Answer : The ability of an atom to attract more of the shared electron pairs of covalent bonds to itself is called the electronegativity of that atom. Non-metallic electronegativity is high and ... . Fluorine has the highest electronegativity , followed by oxygen , chlorine , and nitrogen atoms.

What is Electronegativity ?

Description : What is Electronegativity ?

Last Answer : : The ability of an electron pair to attract a shared electron pair is called the electron negativity of the element.

An atom with high electronegativity generally has :-

Description : An atom with high electronegativity generally has :-

Last Answer : An atom with high electronegativity generally has :- A. tendency to form +ve ions B. high ... C. large atomic size D. low electrons affinity

The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Description : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Last Answer : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have ... (D) clathrates with He and Ne are highly expolsive.

The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Description : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Last Answer : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have ... +6HF underset(Delta)overset("475 K")to XeF_6+3H_2O`

The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Description : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest electronegativity and consequently can oxidise

Last Answer : The ionisation energy of dioxygen (`O_2`) is very close to that of Xenon. Also F and O have the highest ... Ill), (lV) D. (D) (I), (lV)

Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the carbon marked with asterisk is m

Description : Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the carbon marked with asterisk is m

Last Answer : Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the ... 2)-overset(**)CH_(2)-CH_(3)`

Electronegativity of inert gases is

Description : Electronegativity of inert gases is

Last Answer : Electronegativity of inert gases is A. low B. high C. zero D. abnormally high

Alkaline earth metals have low values of electronegativity; which decrease down the group.

Description : Alkaline earth metals have low values of electronegativity; which decrease down the group.

Last Answer : Explain : Alkaline earth metals have low values of electronegativity; which decrease down the group.

Explain :  Electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?

Description : Explain :  Electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?

Last Answer : Explain : Electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?

If oxygen which has an electronegativity of 3.5 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as a polar what bond?

Description : If oxygen which has an electronegativity of 3.5 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as a polar what bond?

Last Answer : Need answer

What is the electronegativity of ammonia?

Description : What is the electronegativity of ammonia?

Last Answer : Ammonia is a compound not an element.

What element has the greatest electronegativity for sodium or magnesium?

Description : What element has the greatest electronegativity for sodium or magnesium?

Last Answer : Magnesium has a higher electronegativity.

What is the significance of an electronegativity of 1.7 between 2 atoms?

Description : What is the significance of an electronegativity of 1.7 between 2 atoms?

Last Answer : It represents the boundary between what is considered to be anionic or a covalent bond.

How IS The electronegativity trend relates to the first ionization energy trend?

Description : How IS The electronegativity trend relates to the first ionization energy trend?

Last Answer : Electronegativity and first ionization energy both increasegoing up the Periodic Table.

If the difference in electronegativity values between two atoms is more than 2.0 non-polar covalent bonds generally form?

Description : If the difference in electronegativity values between two atoms is more than 2.0 non-polar covalent bonds generally form?

Last Answer : At this value an ionic bond is formed.

If the difference in electronegativity values between two atoms is less than 0.4 nonpolar covalent bonds generally form?

Description : If the difference in electronegativity values between two atoms is less than 0.4 nonpolar covalent bonds generally form?

Last Answer : True apex:)

Why do atoms with a weak electronegativity like lithium have a weak attractive force for electrons?

Description : Why do atoms with a weak electronegativity like lithium have a weak attractive force for electrons?

Last Answer : they have few valence electrons and aren't close to having eightvalence electrons

If nitrogen which has an electronegativity of 2.0 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as?

Description : If nitrogen which has an electronegativity of 2.0 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as?

Last Answer : Feel Free to Answer

When Atoms with a high electronegativity like oxygen have a strong attractive force for electrons because?

Description : When Atoms with a high electronegativity like oxygen have a strong attractive force for electrons because?

Last Answer : A. they're close to filling their outer shell, fulfilling the octet rule

How does electronegativity increase?

Description : How does electronegativity increase?

Last Answer : What is the answer ?

When Atoms with a high electronegativity like oxygen have a strong attractive force for electrons because?

Description : When Atoms with a high electronegativity like oxygen have a strong attractive force for electrons because?

Last Answer : A. they're close to filling their outer shell, fulfilling the octet rule

How does fluorine's electronegativity compare to the electronegativigty of oxygen and chlorine?

Description : How does fluorine's electronegativity compare to the electronegativigty of oxygen and chlorine?

Last Answer : Fluorine has a higher electronegativity.

Atoms with a low electronegativity, like lithium, have a weak attractive force for electrons because?

Description : Atoms with a low electronegativity, like lithium, have a weak attractive force for electrons because?

Last Answer : They have few valence electrons and aren’t close to having eight valence electrons

Electronegativity increases from left to right and _ bottom on the periodic table from top to?

Description : Electronegativity increases from left to right and _ bottom on the periodic table from top to?

Last Answer : Decreases

Electronegativity increases from left to right and _ bottom on the periodic table from top to?

Description : Electronegativity increases from left to right and _ bottom on the periodic table from top to?

Last Answer : Decreases

Which elements has highest electronegativity?

Description : Which elements has highest electronegativity?

Last Answer : Arsenic

The high reactivity of fluorine is due to (a) Its high electronegativity (b) Small size of flourine atom (c) Availability of d-orbitals (d) Strong F-F bond

Description : The high reactivity of fluorine is due to (a) Its high electronegativity (b) Small size of flourine atom (c) Availability of d-orbitals (d) Strong F-F bond

Last Answer : Ans:(a)

The energy released when an extra electron is added to a neutral gaseous atom is called (a) Bond energy (b) Electron affinity (c) Ionization potential (d) Electronegativity

Description : The energy released when an extra electron is added to a neutral gaseous atom is called (a) Bond energy (b) Electron affinity (c) Ionization potential (d) Electronegativity

Last Answer : Ans:(b)

Which of the following properties is not true for an alkali metal? (a) Low electronegativity (b) Low ionisation energy (c) Low atomic volume (d) Low density

Description : Which of the following properties is not true for an alkali metal? (a) Low electronegativity (b) Low ionisation energy (c) Low atomic volume (d) Low density

Last Answer : Ans:(c)

Choose the correct statement. (a) Electronegativity increases down a group (b) Electronegativity decreases down a group (c) Electronegativity decreases from left to right along a period (d) Electronegativity changes along a group, but remains constant along a period

Description : Choose the correct statement. (a) Electronegativity increases down a group (b) Electronegativity decreases down a group (c) Electronegativity decreases from left to right along a period (d) Electronegativity changes along a group, but remains constant along a period

Last Answer : Ans:(b)

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal enemy number than the ... ions, the 4s electrons are always lost first; so, they form only cations (positive ions).

The two elements required to form substitutional solid solution should not have (A) Same crystalline structure (B) Same valency (C) Widely differing electronegativity (D) Same atomic sizes

Description : The two elements required to form substitutional solid solution should not have (A) Same crystalline structure (B) Same valency (C) Widely differing electronegativity (D) Same atomic sizes

Last Answer : C) Widely differing electronegativity

In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases

Description : In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases

Last Answer : ANSWER: W -- INCREASES

Which of the following elements has the highest electronegativity? w) Lithium x) Iodine y) Cesium z) Oxygen

Description : Which of the following elements has the highest electronegativity? w) Lithium x) Iodine y) Cesium z) Oxygen

Last Answer : ANSWER: D -- OXYGEN

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability 

Last Answer : Tendency to gain electrons

Define Ionic product of water. What is its value ?

Description : Define Ionic product of water. What is its value ?

Last Answer : The product concentrations H+ and OH- in pure water are in aqueous solutions at a given temperature is known as Ionic Product of water. Its value is 1.0 * 10-14 moles2 / litre2.

Define characteristic of Ionic & covalent compounds.

Description : Define characteristic of Ionic & covalent compounds.

Last Answer : Characteristics Of Ionic Compounds : Physical State : Ionic compounds are solids at room temperature. In crystals the oppositely charged ions are mutually surrounded by each other in orderly ... tetrachloride. Inter Molecular Forces : They have weak intermolecular forces between bonded atoms.

Define Ionic Bond & Covalent Bond how it is formed explain with example.

Description : Define Ionic Bond & Covalent Bond how it is formed explain with example.

Last Answer : Ans : Ionic Bond OR Electrovalent Bond : The attraction that binds oppositely charged ions together is termed as electrovalent bond or ionic bond. It is formed between the atoms with electronegativity ... most shell by means of sharing of unpaired electrons & thus a covalent bond is formed.

Define limiting radius.

Description : Define limiting radius.

Last Answer : The ratio between the radius of cation and the radius of anion is called Limiting radius.

Define: (i) Moment of Inertia (ii) Radius of Gyration

Description : Define: (i) Moment of Inertia (ii) Radius of Gyration

Last Answer : i) Moment of Inertia: Moment of Inertia of a body about any axis is equal to the product of the area of the body and square of the distance of its centroid from that axis.  OR  Moment of ... at which the entire area is assumed to be concentrated without changing the M. I. about the given axis. 

Define a class circle having data members pi and radius. Initialize and display values of data members also calculate area of circle and display it.

Description : Define a class circle having data members pi and radius. Initialize and display values of data members also calculate area of circle and display it.

Last Answer : class abc {  float pi,radius; abc(float p, float r) { pi=p; radius=r; } void area() { float ar=pi*radius*radius; System.out.println("Area="+ar); } void display() { System.out.println("Pi="+pi ... void main(String args[]) { abc a=new abc(3.14f,5.0f); a.display(); a.area(); } }

Define ‘radius of gyration’ and state its application. Calculate radius of gyration for circular lamina of diameter 500mm.

Description : Define ‘radius of gyration’ and state its application. Calculate radius of gyration for circular lamina of diameter 500mm.

Last Answer : Data: d = 500mm Calculate: K Radius of gyration (K): The radius of gyration of a given area about any axis is the distance from the given axis at which the area is assumed to be ... Application: It is used in Euler's formula to determine buckling load on long column. 

Along with the expression define radius of gyration and sectional modulus.

Description : Along with the expression define radius of gyration and sectional modulus.

Last Answer : Radius of gyration (K): The radius of gyration of a given area about any axis is the distance from the given axis at which the area is assumed to be concentrated without changing the MI about the given ... It is the ratio of moment of inertia to the distance of extreme fiber from neutral axis.

Define hydraulic radius for trapezoidal channel.

Description : Define hydraulic radius for trapezoidal channel.

Last Answer : Hydraulic Radius: It is the ratio of the wetted area to wetted perimeter. It is also called as Hydraulic mean depth. R= Wetted area / Wetted perimeter = A/P