Three ions are listed below.
• Ion P: atomic number 16 and 18 electrons
• Ion Q: atomic number 20 and 18 electrons
• Ion R: atomic number 13 and 10 electrons
Which ordering ranks the ions from most negative net charge to most positive net charge?
a) R, Q, P
b) Q, P, R
c) P, Q, R
d) R, P, Q