What is the valence electron configuration for Al2 2 plus?

Answer 1

Al (neutral atom) is 1s2 2s2 2p6 3s2 3p1, so if it loses 2 electrons to become Al^2+ wouldn't make much sense, as it wants to lose 3 electrons to become Al^3+ which will then be isoelectronic with Neon. Are you sure you meant Al^2+ and not Al^3+. If you meant Al^2+, the it will be 1s2 2s2 2p6 3s1 (not likely, however).

Answer 2

The valence electron configuration for Al2+ is 3s2 3p6. Aluminum (Al) typically has 3 valence electrons in the 3s and 3p orbitals. When it forms Al2+, it loses 2 electrons, leading to a full 3s orbital (2 electrons) and a full 3p orbital (6 electrons), resulting in the electron configuration 3s2 3p6.