Question

what is the charge of a cation?

a negative charge

the charge depends on the size of the nucleus.

a positive charge

no charge

Explanation:

A cation is formed when an atom loses one or more electrons. Electrons have a negative charge. When an atom loses electrons, the number of protons (which have a positive charge) exceeds the number of electrons. So, a cation has a positive charge.

Answer:

a positive charge