Question

Pick out the isoelectronic structure from the following:

( $C{H}_3^{+},H_3{O}^{+},N{H}_3,{CH}_3^{-}$ )

• A. $H_3{O}^{+},N{H}_3,C{H}_3^{-}$
• B. $H_3{O}^{+},C{H}_3^{+},C{H}_3^{-}$
• C. $H_3{O}^{+},N{H}_3,C{H}_3^{+}$
• D. None of these

Answer 1

The correct option is A $H_3{O}^{+},N{H}_3,C{H}_3^{-}$

Isoelectronic species are those which contain the same number of electrons. The total number of electrons are obtained by adding 6 electrons for carbon, $7$ electrons for nitrogen, $8$ electrons for oxygen, $+1$ for negative charge and $-1$ for positive charge.$H_3{O}^{+},N{H}_3,C{H}_3^{-}$ have 10 electrons each.