Editing Openai/6946f4fa-e8bc-800b-b77e-c62f6390a97c (section)

=== # ===

==== ### ====

: 

===== : =====

===== a. 735 kJ/mol =====
b. less than 735 kJ/mol
c. greater than 735 kJ/mol
d. More information is needed
e. None of these

==== |     |     |     | ====
| --- | --- | --- |
|     |     |     |
|     |     |     |
|     |     |     |

==== ### ====

: 

IE2>IE1\boxed{\text{IE}_2 > \text{IE}_1}IE2>IE1
原因：
* 第一顆電子移除後
* 剩下電子感受到的有效核電荷更大
* 更難被移除

===== Mg:[Ne] 3s2\text{Mg}: [Ne]\,3s^2Mg:[Ne]3s2 =====
* 第一游離能：移除 第一顆 3s 電子
* 第二游離能：移除 第二顆 3s 電子
* 👉 電子更靠近核 → 能量更大

==== ### ====