有關鍵合的問題?

N: 1s22s22p3P: 1s22s22p63s23p3 ∵ P has low-lying empty d-orbitalà N has no low-lying empty d-orbitalà excitation of e- from 2s to 3s orbital needed a quite high amount of energyà not favoured & cannot form NCl5

2010-07-26 14:08:18 補充：
low-lying empty d-orbital
意思係 佢由3s 激發上去 3d 既能量值較少
而唔係 2s 上 3p
相差能量值，大約係 1370 kJmol^-1

相反, N 因為要由 2s 升上 3s
相差大約 2900 kJmol^-1

激化後:

P: 1s^2 2s^2 2p^6 3s^1 3p^3 3d^1


1s 係最低能階

這裏可以幫到你
http://acowsiw.clidc.com/yahoo.com.hk/hk/auction/178987536