Question

Which ion has the smallest ionic radius, Mg2+ or Ca2+? Explain please?

Which ion has the smallest ionic radius, Mg2+ or Ca2+? Explain please?

Answers

Mg is smaller the Ca because it is above it in the periodic table, magnesium being a period above it shows that it has one less electron shell so it's smaller, calcium has another ring of electrons, as to say, that are around it so it's radius would be bigger :)

#1

Mg +2, atomic radius decreases as you go up to periodic table.

#2