Question

Why sixth period of the periodic table should have 32 elements?

Answer 1

According to Pauli's exclusion principle, each orbital can accommodate a maximum of 2 electrons. Thus, 16 orbitals can accommodate a maximum of 32 electrons. Hence, the sixth period of the periodic table should have 32 elements.

Answer 2

Bcous these all 32 have same number of shells as according to rule .