Question

determining charge
an element becomes a positively charged ion when it
loses protons.
loses electrons.
gains electrons.
gains neutrons.

Explanation:

A neutral atom has equal protons (positive charge) and electrons (negative charge. Losing electrons leaves more positive protons, creating a positive ion. Protons define the element, so they are not lost, neutrons have no charge, and gaining electrons creates a negative ion.

Answer:

loses electrons.