Question
Enlist the number of elements in each block.
Solution
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
