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krok68 [10]
3 years ago
7

Can someone please help me

Chemistry
1 answer:
Lilit [14]3 years ago
3 0
It is A. Barium

Explanation: I did that already
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Answer:

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Explanation:

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C. They have the same number of electrons.  is wrong, if they had the same number of electrons they must be they same element and they aren't the same.

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