The electronic configuration of four elements are :
(P) `[Xe]6s^(2)`
(Q) `[Xe]4f^(14),5d^(1),6s^(2)`
(R) `[Ar]4s^(2),4p^(5)`
(S) `[Ar]3d^(10),4s^(2),4p^(3)`
Which of the following is/are correct?

Options

A. (P) is a d-block element
B. (Q) is a d-block element
C. (R) has highest electron affinity among given elements
D. (S) shows maximum covalency of 4

Answer

C

Explanation

`Prarrs`-block element, `Qrarrf`-block element,
`Rrarr"halogen",Srarr` shows maximum covalency of 5