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21-10-2021
Chemistry

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when an atom become a negative ion, where do the extra electrons come from?

Respuesta :

1701977 1701977

21-10-2021

Answer:

Valence Shell

Explanation:

Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons.

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