Question

how many electrons will aluminum need to gain or lose to be left with a full outer shell of valence electrons? * 2 points
al
lose 1
gain 2
lose 3
gain 4
lose 5
gain 6
lose 7
gain 8
which element does this bohr model represent? * 2 points

Explanation:

Step1: Determine aluminum's valence electrons

Aluminum (Al) has an atomic number of 13. Its electron - configuration is 2, 8, 3. So it has 3 valence electrons.

Step2: Analyze to achieve a full outer shell

Atoms tend to gain or lose electrons to achieve a stable electron configuration like a noble gas. For aluminum, it is easier to lose its 3 valence electrons to have a full outer shell (the second shell with 8 electrons) rather than gain more electrons.

Answer:

C. lose 3