Question

Among the following which one is the correct subshell electronic configuration of Aluminum (Z=13 ) *

1S² 2S² 2P² 3S⁶ 3P¹
1S² 2S² 2P⁶ 3S² 3P¹
1S² 2S² 2P⁶ 3S¹ 3P²

Answer 1

Answer:

1S² 2S² 2P⁶ 3S² 3P¹

Explanation:

the atomic number of Aluminium is 13

first 1 s fill 2 electron then 2s fill 2 electron then 2p with 6 electron ,then 3s need 2 electron so no of electron remaining is 1. so that is electron is filled in p subshell

So the answer is 1S² 2S² 2P⁶ 3S² 3P¹

Answer 2

Answer:

1S² 2S² 2P⁶ 3S² 3P¹

Hope it helps you

sorry for the delay