Answer:
[tex] \boxed{option \: 2 \rightarrow1 {s}^{2} 2 {s}^{2} 3 {s}^{1} }[/tex]
Explanation:
According to Aufbau principle the electrons in any atom are filled in the increasing level of energies of corresponding orbitals.
The energy level order of orbitals are 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p.....
The term excited stated tells that the electron of Outermost orbital escapes the ground state & move to the next energy level i.e. the electron that was supposed to enter in 2p orbital will enter in 3s orbital & option 2 represent the correct situation of an atom in excited state.
Thanks for joining brainly community!
