91- 6303239042
Energy order varies:
- B$$_2$$, C$$_2$$: $$\sigma_{2s} \lt \sigma^*_{2s} \lt \pi_{2p} \lt \sigma_{2p_z} \lt \pi^*_{2p} \lt \sigma^*_{2p_z}$$
- O$$_2$$, F$$_2$$: $$\sigma_{2s} \lt \sigma^*_{2s} \lt \sigma_{2p_z} \lt \pi_{2p} \lt \pi^*_{2p} \lt \sigma^*_{2p_z}$$
