Heteronuclear diatomic molecules 补书 LiF (ground state) (1s1)2(1s)2(2sp)2(o)2(m)4 Li LIF FHeteronuclear Diatomic Molecules 10 LiF (ground state): (1sLi)2 (1sF)2 (2sF)2 (σ )2 (πnb)4