`1s^(2)2s^(2)2p^(6)3s^(2)` is the electronic configuration of the metal

1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5) is not the electron configuration of

Electronic configuration of element "A" is 1s^(2)2s^(2)2p^(4)" . Electronic configuration of element "B" is 1s^(2)2s^(2)2p^(6)3s^(2) . Formula of compound formed is

The electronic configuration of Sodium is 1s^(2) 2s^(2) 2p^(6) 3s^(1) . What information that it gives ?

The electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2) represents

The electronic configuration 1s^(2)2s^(2)2p^(6)3s^(1) represents

The electronic configuration 1s^2 2s^6 2p^6 3s^2 3p^4 represents

The electronic configuration 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows

The electronic configuration 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows