Question

One reason spectroscopists study excited states is to gaininformation about the energies of orbitals that are unoccupied inan atom's ground state. Each of the following electronconfigurations represents an atom in an excited state. Identify theelement, and write its condensed ground-state electronconfiguration. (Type your answer using the format [Ar] 4s2 3d10 4p2for [Ar]4s23d103p2.)

(a)1s22s22p63s13p1
element
ground state electron configuration [ ] (b)1s22s22p63s23p44s1
element
ground state electron configuration [ ] (c)1s22s22p63s23p64s23d44p1
element
ground state electron configuration [ ] (d)1s22s22p53s1
element
ground state electron configuration [ ]

Answer 1

A) Mg
[Ne] 3s^2

B) Cl
[Ne] 3s^2, 3p^5

C) Mn
[Ar] 4s^2, 3d^5

D) Ne
[He] 2s^2, 2p^6