Question

when an atom that has no charge loses two electrons, it becomes a
positive ion.
negative ion.
positive isotope.
negative isotope.

Explanation:

An atom with no charge has equal numbers of protons (positive charge) and electrons (negative charge). When it loses two electrons, the number of protons exceeds the number of electrons. Since protons are positively charged, the atom becomes a positive ion (cation). Isotopes are atoms of the same element with different numbers of neutrons, which is not relevant here as the question is about electron loss. Negative ions (anions) form when an atom gains electrons.

Answer:

positive ion.