Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Highest energy will be absorbed to eject out the electron in the configuration - Sarthaks eConnect

Highest energy will be absorbed to eject out the electron in the configuration:

`1s^2 2s^2 2p^1`

`1s^2 2s^2 2p^3`

`1s^2 2s^2 2p^2`

`1s^2 2s^2 2p^4`