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Classification of Elements and Periodicity in Properties
The number of elements in each block are:
(i) s-block: There are 13 elements in s-block. Except the first period (having only one element), each other period of the block has 2 elements.
(ii) p-block: There are 31 elements. With the exception of first period (having only one element), each other period has got 6 elements.
(iii) d-block: This block has 40 elements. Each period i.e. fourth, fifth, sixth and seventh of the block has got 10 elements.
(iv) f-block: This block has 28 elements in the form of 2 horizontal rows of 14 elements each.
Lanthanoides = 14 elements.
Actinoides = 14 elements
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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 ?
What are the advantages of periodic classification of elements?
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