Answer:
C. results when an alkaline-earth metal loses one of its outermost electrons
Step-by-step explanation:
An ion can be said to result when an alkaline - earth metal loses one of its outermost electrons.
Ions are charged substances that takes part in chemical reaction.
- An an atom is neutral substance that is a component of an element.
- An ion is charged substance.
- In an ion, the number protons and electrons are unbalanced.
- The number of protons in an atom are the positively charged particles.
- The number of electrons are the negatively charged particles.
When there is an inequality between the number of protons and electrons within an atom, an ion forms.