Question

Pick out among the following species isoelectronic with $C{O}_2$ :

• A. $N_3^{-}$
• B. $(CNO{)}^{-}$
• C. $(NCN{)}^{2-}$
• D. $N{O}_2^{-}$

Answer 1

Answer: (A), (B), (C)

The correct options are
A $N_3^{-}$
B $(CNO{)}^{-}$
C $(NCN{)}^{2-}$

${CO}_2=4+6\left(2\right)=16\overline{e}$

$N_3^{-}=5\left(3\right)+1=16\overline{e}$

${\left(CNO\right)}^{-}=(4+5+6+1)=16\overline{e}$

${\left(NCN\right)}^{2-}=(5+4+5+2)=16\overline{e}$

${NO}_2^{-}=(5+6(2)+1)=18\overline{e}$

${NO}_2^{-}$ is not isoelectronic with ${CO}_2$