Question

Arrange the subshell in the correct oder of electron filling?
4s 3d 2p 3s 2s 1s 3p 4p​

Answer 1

Answer:

1s 2s 2p 3s 3p 4s 3d 4p

Explanation:

Because this is correct order of Electron filling in subshell

1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d and so on