engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Chemistry Chemical Bonding and Molecular Structure Molecular Orbital Theory
According to molecular orbital theory, the species among the following that does not exist is :
1
\(\rm O_2^{2-}\)
2
\(\rm He_2^{2-}\)
3
Be2
4
\(\rm He_2^{+}\)