Question

Which is the electronic configuration for Al+3 Group of answer choices1s2 2s2 2p6 3s2 3p11s2 2s2 2p6 3s2 3p41s2 2s2 2p61s2 2s2 2p3

Answer 1

First, let's make the electronic distribution for neutral atom of Al.

13Al: 1s² 2s² 2p⁶ 3s² 3p¹

Al3+ lost 3 electrons, so we need to take 3 electrons of the electronic distribution of neutral Al.

13Al3+: 1s² 2s² 2p⁶

Answer: 1s2 2s2 2p6