Question

when electrons are removed from the outermost shell of a calcium atom, the atom becomes an anion that has a larger radius than the atom. an anion that has a smaller radius than the atom. a cation that has a larger radius than the atom. a cation that has a smaller radius than the atom.

Explanation:

When electrons are removed from an atom, it forms a cation. With fewer electrons, the effective nuclear - charge on the remaining electrons increases, pulling them closer to the nucleus. So, the radius of the cation is smaller than that of the neutral atom.

Answer:

a cation that has a smaller radius than the atom.