Q.44:- Name different blocks of elements in the periodic table. Give general electronic configuration of each block.
Elements in the long form of the periodic table have been divided into four blocks i.e., s, p, d and f. This division is based upon the name of the orbital which receives the last electron. General electronic configuration of s-block elements: ns1 – 2 where n = 2 – 7
p-block elements: ns2 np1- 6 where n = 2 – 6
d-block elements: (n -1) d1 -10 ns0- 2 where n = 4 – 7
f-block elements: (n – 2)f0-14(n -1) d0-1 ns2 where n = 6 – 7