... thnh liờn kt hyro ga cỏc phõn t H2O, HF: H-O H- O H-O H H .H-F H-F H-F H * Liờn kt hyro cú cỏc c im sau: - Thuc loi liờn kt cú bn thp , khong (40 kJ/mol) - Lm tng nhit sụi, nhit núng chy, nhit ... ng lng MZ trờn trc z: MZ = mh ( 2-1 0) T s lng t ph l s suy m v s orbital (ụ lng t) nh sau: S lng t ph l S lng t t m S ụ lng t 0 1 -1 , 0, -2 , -1 , 0, 1, -3 , -2 , -1 , 0, 1, 2, Trng thỏi s cú ụ lng ... lp 6s ca hai nguyờn t ( 55Cs - Cezi, 56Ca - Canxi), tip theo 10 nguyờn t dóy 5d (57La - Lantan 80Hg - Thu ngõn), 14 nguyờn t nhúm Lantanoit 4f: (59Ce - Ceri 71Lu -Lutexi) v cui cựng l sỏu nguyờn...