TextBook Solutions for Assam Board Class 11 Chemistry Chemistry Part I Chapter 3 Classification Of Elements And Periodicity In Properties

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TextBook Solutions for Assam Board Class 11 Chemistry Chemistry Part I Chapter 3 Classification Of Elements And Periodicity In Properties

Question 1

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Which important property did Mendeleev use to classify the elements in his periodic table?

Solution

Atomic mass.

Question 2

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What are typical elements?

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Question 3

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Give the ‘liquid elements’ in the periodic table.

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Question 4

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What is valency of an element?

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Question 5

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Gallium was named by Mendeleev as

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Question 6

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What are magic numbers?

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Question 7

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Which property is the basis of long form of periodic table?

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Question 8

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How many elements are placed in each period of the p-block?

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Question 9

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What is the number of groups in: (i) p-block (ii) d-block?

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Question 10

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How many elements are present in:
(i) second period
(ii) fourth period
(iii) sixth period?