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Classification Of Elements And Periodicity In Properties

Question
CBSEENCH11005436
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What is the basis of Mendeleev's Periodic table?

Solution
Mendeleev’s periodic table is based on the Mendeleev’s periodic law which sates that the physical and chemical properties of elements are a periodic function of their atomic masses. It means that when the elements are arranged in order of increasing atomic masses, the elements with similar properties recur at regular intervals.

Some More Questions From Classification of Elements and Periodicity in Properties Chapter

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

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

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

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

What is the name given to the s-block elements?

To which block the element with outer electronic configuration 4s23d10 belongs?

Why are there 10 elements in each series of d-block?

In terms of electronic configuration,
what is common in a given period and group?

Give the general electronic configuration of
(i) Transition elements     (ii) Inner transition elements.

Name the group and period to which an element with Z = 15 belongs ?

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