没错,CH3很不稳定,还差1个电子达到8电子结构,所以很象Cl原子那样发生反应：
Cl + H = HCl CH3 + H = CH4
Cl + Cl = Cl2 CH3 + CH3 = H3C-CH3
Cl + Na = NaCl CH3 + Na = NaCH3