Which of the following correctly lists the cation, anion and its neutral atom in order of decreasing radius size? a Neutral atom > Anion Cation b Cation > Neutral atom > Anion C Neutral atom Cation > Anion d Anion > Neutral atom > Cation

50.23 i believe is correct but don't quote me on that.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.