1. 下列何者為放熱過程?(A)氫原子的電子由 4s 移至 3d(B)碳 1s22s22px2 →碳 1s22s22px12py1(C)鈉 1s22s22p63s1→鈉 1s22s22p66s1(D)氧 1s22s22px22py2→氧 1s22s22px22py12pz1(E)銅[Ar]