The order of interatomic distances in \(\mathrm{B}_2, \mathrm{~B}_2^{-}\)and \(\mathrm{B}_2^{+}\) is -
1
\(\mathrm{B}_2<\mathrm{B}_2^{+}<\mathrm{B}_2^{-}\)
2
\(\mathrm{B}_2^{+}<\mathrm{B}_2<\mathrm{B}_2^{-}\)
3
\(\mathrm{B}_2^{-}<\mathrm{B}_2<\mathrm{B}_2^{+}\)
4
\(\mathrm{B}_2<\mathrm{B}_2^{-}<\mathrm{B}_2^{+}\)