Question

Which of the following is true about Aluminum when it becomes an ion?
Responses

Al will lose 3 electrons which gives it a +3 charge
Al will lose 3 electrons which gives it a +3 charge

Al will gain 3 electrons which gives it a +3 charge
Al will gain 3 electrons which gives it a +3 charge

Al will lose 3 electrons which gives it a -3 charge
Al will lose 3 electrons which gives it a -3 charge

Al will gain 3 electrons which gives it a -3 charge

Answer 1

"Al will lose 3 electrons which gives it a +3 charge."

Explanation: Neutral Al (Z = 13) has electron configuration [Ne] 3s2 3p1 (three valence electrons). It commonly loses those three valence electrons to form Al3+ with configuration [Ne]. Losing electrons removes negative charge, so the ion is positive (+3).