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If an atom loses and electron what type of ion does it form?

Answer

cation

Explanation:

If an atom losses electrons it forms a positively charged ion called the cation.

cation has more protons than electrons, thereby giving it a net positive charge.

To form a cation one or more electrons must be lost, typically pulled away by atoms with a stronger affinity for them.

The number of electrons lost, and so the charge of the ion, is indicated after the chemical symbol, e.g. zinc (Zn) loses two electrons to become Zn2+.

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answer; protein;