What are the periods in Mendeleev's periodic table?

What are the periods in Mendeleev's periodic table?
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Because some of the elements were not yet discovered so he left them blank for other elements to be discovered. -bobby corner
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What are the periods in Mendeleev's periodic table?

Description : What are the periods in Mendeleev's periodic table?

Last Answer : Because some of the elements were not yet discovered so he left them blank for other elements to be discovered. -bobby corner

State Mendeleev’s periodic law. Write two achievements of Mendeleev’s periodic table -Science

Description : State Mendeleev’s periodic law. Write two achievements of Mendeleev’s periodic table -Science

Last Answer : Mendeleevs Periodic Law: Properties of elements are the periodic function of their atomic masses. Achievements:i It could classify all the elements discovered at that time. ii It helped in the discovery of new elements. iii it helped in the correction of the atomic mass of some of the elements.

How many stages are there in Mendeleev's Periodic Table ?

Description : How many stages are there in Mendeleev's Periodic Table ?

Last Answer : There are 7 stages in Mendeleev's Periodic Table .

Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic Table? (1) Scandium (2) Gallium (3) Titanium (4) Germanium

Description : Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic Table? (1) Scandium (2) Gallium (3) Titanium (4) Germanium

Last Answer : (2) Gallium

Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of : (1) Modern periodic table (2) Newland's law of octaves (3) Dobereiner's triads (4) Mendeleev's periodic table

Description : Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of : (1) Modern periodic table (2) Newland's law of octaves (3) Dobereiner's triads (4) Mendeleev's periodic table

Last Answer : (2) Newland's law of octaves Explanation: Among the major limitations of Newlands Law of Octaves, some similar elements have been separated from one another while some dissimilar elements have been placed in the same column.

Mendeleev's periodic table was based on?

Description : Mendeleev's periodic table was based on?

Last Answer : increasing order of atomic mass

Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Description : Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Last Answer : Ans.Because Mendeleev gave priority to similarities in properties. Germanium and gallium

Compare the arrangement of elements in Mendeleev’s and Modern periodic table.

Description : Compare the arrangement of elements in Mendeleev’s and Modern periodic table.

Last Answer : Mendeleev’s periodic table Modern periodic table 1. Elements are arranged in the order of increasing atomic masses. 1. Elements are arranged in the order of increasing atomic numbers.

State the characteristics of Mendeleev’s periodic table.

Description : State the characteristics of Mendeleev’s periodic table.

Last Answer : 1) Mendeleev’s periodic table consists of 7 periods (horizontal) and 9 groups (vertical). 2) Elements are arranged in the increasing order of their atomic weights. 3) The elements that have similar property were placed in vertical columns.

Explain the Mendeleev’s Law of classification of elements also describe advantages & disadvantages of his periodic table.

Description : Explain the Mendeleev’s Law of classification of elements also describe advantages & disadvantages of his periodic table.

Last Answer : Ans : Mendeleeve's Law of Classification : Mendeleeve in 1869 arrange elements in order of increasing atomic masses. He placed chemically similar elements vertically beneath each other & concluded that : The ... metals. No Idea Of Atomic Structure : It failed to give the idea of atomic structure.

What is Mendeleev’s periodic law?

Description : What is Mendeleev’s periodic law?

Last Answer : What is Mendeleev’s periodic law?

What is Mendeleev's periodic law?

Description : What is Mendeleev's periodic law?

Last Answer : the principle that chemical properties of the elements are periodic functions of their atomic numbersMendeleev's periodic law states that properties of elements are periodic functions of their atomic masses.

What is Mendeleev's periodic law?

Description : What is Mendeleev's periodic law?

Last Answer : the principle that chemical properties of the elements are periodic functions of their atomic numbersMendeleev's periodic law states that properties of elements are periodic functions of their atomic masses.

Mention the merits of Mendeleev’s periodic law.

Description : Mention the merits of Mendeleev’s periodic law.

Last Answer : Mendeleev left vacant spaces in the table for the elements that were to be discovered. He was able to predict the atomic mass and properties of elements even before their discovery. His periodic table helped to discover new elements like germanium.

State Mendeleev’s periodic law.

Description : State Mendeleev’s periodic law.

Last Answer : Mendeleev’s periodic law states that “The properties of elements are periodic functions of their atomic mass”.

(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.

On the periodic table how many periods are there?

Description : On the periodic table how many periods are there?

Last Answer : Th horizontal rows are referred as periods. There are 7 periods in Periodic Table.

How many groups and periods are there in periodic table?

Description : How many groups and periods are there in periodic table?

Last Answer : 18 groups and 7 Periods

How many groups and periods are found in long form periodic table?

Description : How many groups and periods are found in long form periodic table?

Last Answer : Ans: 7 periods 18 groups

The following shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e.

Description : The following shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e.

Last Answer : a) Select the letter which represents a metal. b) Select the letter which represents a noble gas. a) d b) c

List the short period, long period and incomplete periods in the modern periodic table

Description : List the short period, long period and incomplete periods in the modern periodic table

Last Answer : Periodnumber 1st 2 nd Description Veryshort 8 elements (Li to Ne) Long 18 elements (K to Kr) Very long 32 elements (Cs to Rn) Short 5 Long 4 th 6 th 7th 2 (H & He) Short ... of elements incomplete 8 elements ( Na to Ar) 18 elements (Rb to Xe) Rest of the elements (Fr onwards)

How many periods and groups are there in the modern periodic table?

Description : How many periods and groups are there in the modern periodic table?

Last Answer : In the modern periodic table there are 7 periods and 18 groups.

What are periods and groups in the modern periodic table?

Description : What are periods and groups in the modern periodic table?

Last Answer : The horizontal rows in the periodic table are called periods. The vertical columns in the periodic table are called groups.

Why did some of the elements did not match perfectly on Mendeleev's table?

Description : Why did some of the elements did not match perfectly on Mendeleev's table?

Last Answer : Need answer

MENDELEEV’S PERODIC TABLE

Description : MENDELEEV’S PERODIC TABLE

Last Answer :  The physical and chemical properties of element are a periodic function of their atomic masses.  The tabular arrangement of the element based on the periodic law is called Mendeleev's ... different properties. E.g. Manganese is placed with halogens which totally differ in the properties.

Let x1(t) and x2(t) be periodic with fundamental periods T1 and T2 respectively. Under what

Description : Let x1(t) and x2(t) be periodic with fundamental periods T1 and T2 respectively. Under what condition be the sum x(t) = x1(t) + x2(t) be periodic ? (A) Only for T1 = T2 (B) Always periodic (C) For T1/T2 equal to a rational number (D) Not periodic

Last Answer : Let x1(t) and x2(t) be periodic with fundamental periods T1 and T2 respectively. Under what condition be the sum x(t) = x1(t) + x2(t) be periodic ? (A) Only for T1 = T2 (B) Always periodic (C) For T1/T2 equal to a rational number (D) Not periodic

Which is a property that Mendeleev's predicted for gallium?

Description : Which is a property that Mendeleev's predicted for gallium?

Last Answer : Examples: density, melting point, atomic weight, density and formula of oxide.

What was the Mendeleev’s basis for classification of elements?

Description : What was the Mendeleev’s basis for classification of elements?

Last Answer : Mendeleev’s classification is based on atomic mass.

What is the periodic table of elements?

Description : What is the periodic table of elements?

Last Answer : Answer: The periodic table of elements is a chart that arranges all known chemical elements in order of increasing atomic number, based on their electron configurations and chemical properties. ... as it allows scientists to predict the properties and behavior of different elements and compounds.

What alloy is created when you melt and mix all metals on the periodic table in equal portions?

Description : What alloy is created when you melt and mix all metals on the periodic table in equal portions?

Last Answer : You can’t mix them all, their melting points are vastly different.

Do we have (or will have soon) a periodic table of sub-atomic elements?

Description : Do we have (or will have soon) a periodic table of sub-atomic elements?

Last Answer : http://www.bing.com/images/search?q=subatomic+elements+chart&qpvt=sub+atomic+elements+chart&qpvt=sub+atomic+elements+chart&FORM=IGRE ?

Do chemists have to memorize all the elements of the periodic table?

Description : Do chemists have to memorize all the elements of the periodic table?

Last Answer : answer:I don't see why they would have to , since most chemists don't work with all elements. On the other hand, just like readers memorized the alphabet and how to spell and ... have similar properties to each other, as well as isotopes of each. Familiarity sometimes breeds more familiarity.

What would be some good ideas for a Periodic Table Themed Board Game?

Description : What would be some good ideas for a Periodic Table Themed Board Game?

Last Answer : You could use different brand beverage bottle caps for the pieces and have cards that ask the elements in certain materials with higher points for the more complex answers, and play it like a game of chess. You ... a rook, you get benzene you move like the queen. I'm not sure what makes the king.

Is there a slower version of the periodic table song?

Description : Is there a slower version of the periodic table song?

Last Answer : answer:Are you talking about Tom Lehrer’s “The Elements.” Simply sing it slowly. Here Lehrer’s sings and the lyrics are typed underneath.

When talking about the periodic table, what are the trends of precipitates as you move down the column of alkaline earth metals?

Description : When talking about the periodic table, what are the trends of precipitates as you move down the column of alkaline earth metals?

Last Answer : Homework, eh? :)

Is the Iron in ours bodies the same Iron on the periodic table of the elements?

Description : Is the Iron in ours bodies the same Iron on the periodic table of the elements?

Last Answer : Yep, good ol’ Fe. Here’s the molecular structure of hemoglobin

why is the periodic table symbol for sodium, Na ?

Description : why is the periodic table symbol for sodium, Na ?

Last Answer : Many of them, like lead (Pb) are named after their latin roots.

What element is not on the periodic table? -Riddles

Description : What element is not on the periodic table? -Riddles

Last Answer : The Element of Surprise.

What is the only letter in the alphabet that does not appear anywhere on the periodic table of elements? -Riddles

Description : What is the only letter in the alphabet that does not appear anywhere on the periodic table of elements? -Riddles

Last Answer : The Letter J.

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.

(a) Why do we classify elements? (b) What were the two criteria used by Mendeleev in creating his Periodic Table? ... Justify your answer. -Chemistry 9th

Description : (a) Why do we classify elements? (b) What were the two criteria used by Mendeleev in creating his Periodic Table? ... Justify your answer. -Chemistry 9th

Last Answer : (a) It is done so as to study the properties of elements conveniently. (b) Increasing order of atomic mass and similarities in chemical properties (especially nature and formulae of oxide and hydride formed). ... at that time. (e) They will be kept at same slot as they have same chemical properties.

The elements of the third period of the Periodic Table are given below: periodic-classification-of-elements-chapter-wise-important-questions-class-10-science-1 (a) Which atom is bigger, Na or Mg? Why? (6) Identify the most (i) metallic and (ii) non-metallic element in Period 3. -Science

Description : The elements of the third period of the Periodic Table are given below: periodic-classification-of-elements-chapter-wise-important-questions-class-10-science-1 (a) Which atom is bigger, Na or Mg? Why? (6) Identify the most (i) metallic and (ii) non-metallic element in Period 3. -Science

Last Answer : (a) Sodium is bigger than magnesium as it has lesser nuclear charge so there is less force of attraction between nucleus and valence electrons and less effective nuclear charge. It is, therefore, ... the most non-metallic element because it can gain electrons easily due to its smallest atomic size.

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.

Which is the basis of modern periodic table? -Do You Know?

Description : Which is the basis of modern periodic table? -Do You Know?

Last Answer : answer:

what is the 110 element of periodic table?

Description : what is the 110 element of periodic table?

Last Answer : DS Darmstadtium

The horizontal rows on the periodic table are called?

Description : The horizontal rows on the periodic table are called?

Last Answer : The horizontal rows are called periods

What is the six element of the periodic table of elements?

Description : What is the six element of the periodic table of elements?

Last Answer : Family six on the Periodic Table of elements is also know asChalcogens

What is the signal of the last element of the periodic table ?

Description : What is the signal of the last element of the periodic table ?

Last Answer : Uuo The last element of the periodic table.

Which is the first element in the periodic table ?

Description : Which is the first element in the periodic table ?

Last Answer : The first element in the periodic table is hydrogen ( H) .

What is the main basis of modern periodic table ?

Description : What is the main basis of modern periodic table ?

Last Answer : The true basis of the modern periodic table is the electron configuration.