Elements in the long form of periodic table have been divided into four blocks i.e. s ,p ,d and f. This division is based upon the name of the orbitals which receives the last electron. S block elements 1)Elements in which the last electron enters the s orbital of their respective outermost shells are called s block elements. 2)s sub shell has only 1 orbital which can … [Read more...] about Division of elements into s, p, d and f block