The atomic numbers of elements A, B, C and D are `Z-1, Z, Z + 1` and `Z + 2` respectively. If 'B' is a noble gas, choose the correct answers from the following statements
Q (1) 'A' has higher electron affinity.
Q (2) 'C exists in + 2 oxidation state.
Q (3) 'D' is an alkaline earth metal.

Options

A. (1) and (2)
B. (2) and (3)
C. (1) and (3)
D. (1),(2) and (3)

Answer

C

Explanation

Atomic number of element B=Z
Atomic number of element A=Z-1
Atomic number of element C =Z+1
Atomic number of element D-Z+2
If element B is a noble gas then element A should have the highest electron affinity, clement should exist in + 1 oxidation state and element D should be a alkaline earth metal.