Which of the following diatomic molecular species has only ``\PI`` bonds according to Molecular Orbital Theory? (1) ``O_2`` (2)`` N_2`` (3)`` C_2`` (4) ``Be_2``
digAnsr: 3
Ans : ( 3 ) Sol. MO configuration C 2 is: 1s2, *1s2, 2s2, *2s2, = 2 2x y2p 2p