Chapter 1.2, Problem 4P

Which of the following ions possess a noble gas electron configuration?

${\text{K}}^{\text{+}}$

${\text{He}}^{\text{+}}$

${\text{H}}^{\text{-}}$

${\text{O}}^{\text{-}}$

${\text{F}}^{\text{-}}$

${\text{Ca}}^{\text{2+}}$