Identify the atom which has ground state configuration `[Ar]3d^(10)4s^(2)4p^(1)`

the configuration [Ar]3d^(10)4s^(2)4p^(4) is similar to that of :

the configuration [Ar]3d^(10)4s^(2)4p^(4) is simmilar to that of :

Which atoms ar indicated by the configuration [Ar]4s ^(2) 3d ^(1)

Statement-1 : The ground state configuration of Cr is [Ar] 3d^(5) 4s^(1) Statement-2 : The energy of atom is lessen in 3d^(5)4s^(1) configuration compared to 3d^(1)4s(2) configuration.

The element with the electronic configurations as (Ar) 3d^(10)4s^(2)4p^(3) represents

Identify the atoms that have the following ground state electronic configurations : (i) 1s^2 2s^2 2p^6 3s^2 (ii) 1s^2 2s^2 2p^5 (iii) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10 .

Statement-1 : The groundstate configuration of Cr is [Ar] 3d^(5) 4s^(1) Statement-2 : The energy of atom is lesser in 3d^(5)4s^(1) configuration compared to 3d^(4)4s^(2) configuration.