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Tasya [4]
3 years ago
7

How many electrons can be held in the second orbital (closest to the nucleus)

Chemistry
2 answers:
anzhelika [568]3 years ago
6 0
A valence electron structure would be like this 1s^2 2s^2 2p^6 etc 
1s^2 would be 2, 2s^2 would be 4, 2p^6 would be 12 and so on and so forth.
Yanka [14]3 years ago
5 0
The orbital is called an energy level and they follow an 2/8/8 rule.
2 in the first
8 in the second
and
8 in the third.
so 8 would be the answer.
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43.05 moles of Al needed to react with 28.7 moles of FeO.

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Given data:

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Chemical equation:

2Al + 3FeO → 3Fe + Al₂O₃

Now we will compare the moles of Al with FeO.

                            FeO        :           Al

                             2            :            3

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