F.4 Chem Problem!!!!!!!

2006-10-30 11:33 pm

Cation X+, anion Y-, atom Z and anion W2- all have the same electronic configuration.
The atomic number of these elements are in the order of : X ＞ Z ＞Y ＞ W
Why Why Tell Me Why??????

回答 (4)

KanT

2006-10-31 12:25 am

✔ 最佳答案

Let W,Y,Z be in the period 2
in order to have same electronic configuration
X must be in the lower period(period 3)
So, X is the largest in atomic number.
Then,consider W,Y,Z
W is in G6
Y is in G7
Z is in G0
So, Z ＞ Y ＞ W and X ＞ Z ＞Y ＞ W

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用戶82810

2006-10-31 12:23 am

first they are in same period/similar electronic structure for example period 1
Z=8
X=9
Y=7
W=6
so X ＞ Z ＞Y ＞ W

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