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tino4ka555 [31]
2 years ago
14

Which is the atomic number of an atom that forms an ion with 18 electrons and a charge of 2+?

Chemistry
1 answer:
Anettt [7]2 years ago
5 0

Answer:

Calcium

Explanation:

It has 20 electrons to start, loses two to become Ca 2+, and is left with 18 electrons

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