Question

If the electron configuration of a ground state potassium atom is 1s22s22p63s1, the electron configuration of the potassium cation (K+) would be:
A.1s22s22p63s1
B.1s12s22p63s1
C.1s22s22p63s2
D.1s22s22p6
E.none of the above

Answer 1

@iPwnBunnies

Answer 2

A + charge means that an electron was taken out of the potassium atom. So, if it has one less electron, the electron from the 3s orbital disappears, and so does the 3s orbital.

Answer 3

I'm pretty sure it's D

Answer 4

Yes.