| Correlated
motions, 2s2 1Se and 2p2 1Se |
| Atomic orbital〔×〕 Molecular
picture〔◎〕 |
| 2s2
1Se |
| |K=1〉=0.46|2s2s〉 − 0.88|2p2p〉 |
| |K=−1〉=0.88|2s2s〉+0.46|2p2p〉 |
| “1st
excited state” w.r.t. θ12 |
| “Ground state”
w.r.t. θ12 |
| 0 |
| 0 |
| 0 |
| θ12 |
| π |
| 0 |
| π |
| θ12 |
| r2 |
| r1 |