Question

Pick out the isoelectronic structures from the following .
`I CH_3^+ (II) H_3O^+ , (III) NH_3, (IV) CH_3^-` :
A. `CH_3^+`
B. `H_3O^+`
C. `NH_3`
D. `CH_3^-`

Answer 1

Correct Answer - B,C,D
Total number of electrons in `CH_3^(+)=8`
Total number of electrons in `H_3O^(+), NH_3` and and `CH_3^(-)` are 10 in each case. As such `H_3O^+ , NH_3 and CH_3^(-)` are isoelectrons.