Question

Set of molecules which are isoelectronic is :
a) $N_2$ and CO
b) $C{O}_2$ and laughing gas $\left(N_{2}O\right)$
c) CaO and MgS
d) Benzene and Borazole $\left(B_3{N}_3{H}_6\right)$

• A. a, b, d
• B. b, c, d
• C. c, d
• D. a, b, c, d

Answer 1

The correct option is D a, b, c, d

The species which have same number of electrons are called isoelectronic species.

$N-7,C-6,O-8,Ca-20,Mg-12,S-16,B-5,H-1$

a) $N_2-14$ and $CO-14$

b) $C{O}_2-22$ and $N_{2}O-22$

c) $CaO-28$ and $MgS-28$

d) Borazole = $B_3{N}_3{H}_6-42$ and Benzene = $C_6{H}_6-42$