Question

The statement that is not correct for periodic classification of elements is:
(a) The properties of elements are periodic function of their atomic
numbers,
(b) Non-metallic elements are less in number than metallic elements.
(c) For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitals,
(d) The first ionization enthalpies of elements generally increase with
increase in atomic number as we go along a period.

Answer 1

Answer:

option C is the incorrect sentence