Which of the following are isoelectronic and isostructural ?

Options

A. `NO_2^(+), CO_2`
B. `NO_3^(-), BF_3`
C. `NH_3, CH_3^(-)`
D. All of these

Answer

D

Explanation

(A)`NO_2^+`=7+16-1=22 , `CO_2`=6+16=22
So isoelectronic (both have 22 electrons in valence shells)
`O=underset(sp)overset(+)N=O,O=underset(sp)C=O` both are linear so isostructural
(B)`NO_3^(-)`=7+24+1=32 , `BF_3`=5+27=32
So isoelectronic and are isostructural as both have trigonal planar structures

(C )`NH_3=7+3=10 " " CH_3^(-)=6+3+1=10`
So isoelectronic