Chemistry
Senior High
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56. 電子式 例にならって次の元素記号の周囲にをつけ, 電子式を記せ。
族
16
17
18
11
2
13
14
15
(例)
He
H.
Li
Be
B
N.
O
: F
Ne:
Na
Mg
Al
Si
P.
S
CI
Ar
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