1) Between calcium ion and magnesium ion, which one is the largest and why? a) calcium ion because it has one more shell than magnesium ion

b) magnesium ion because it has fewer electrons than calcium

c) calcium ion because it lost a larger density of electrons

d) magnesium ion because it has one more shell than calcium ion

2) Between phosphide ion and sulfide ion, which is the smallest and why?

a) sulfide ion because it gained fewer electrons

b) phosphide ion because it gained more electrons

c) sulfide ion because it lost fewer electrons

d) phosphide ion because it lost more electrons