Which of the following classifications is incorrect ?

Options

A. The representative elements are metals and nonmetals in which s and p orbitals are filled. These elements are in groups 1, 2 and 13 – 18.
B. The representative elements are metals and nonmetals in which s and p orbitals are filled. These elements are in groups1 and 2 only.
C. The noble gases (group 18) are nonmetals and are placed at the end of each period.
D. The transition elements are the metallic elements in which the d orbitals are filled. These elements are placed in group 3 – 12.

Answer

B

Explanation

Transition elements `rArr` Group 3 to 12
Representative elements `rArr` Group 1, 2 & 13 – 18