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Thagt it has lost three electrons.

Aluminium metal has 13 protons(+) and 13 electrons(-), as the neutrally charged atom.

However, as the aluminium cation it has 13 protons(+) and 10 electrons(-) in the charged ion.

(+)13 (-) 10 = (+)3

Hence its ionic charge is Al^(3+).

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lenpollock

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4mo ago

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