Which of the following is possible for aluminum to have a full outer shell?i need the answer asap a. three electrons are lost, creating al-3. b. three electrons are lost, creating al+3. c. three electrons are gained, creating al-3. d. three electrons are gained, creating al+3.

The answer is; B.

This is called an aluminum cation. Aluminum forms bonds with anions in which it can donate its three valence electrons so it can achieve stable electron configuration. Stable electron configuration is having 8 electron in the outer shell. By donating its 3 outer valence electrons, the aluminium will have the more stable 2.8 electron configuration. The +3 means it has lost 3 electrons hence has 3 extra protons (that are not matched by an electron) in its nucleus (also indicating its valency).

its first and third is your answer i did the qustion the fourth isnt right