Question

when it reacts with another element, an oxygen atom gains two electrons. what is the resulting particle?
a. an ion with no charge
b. an ion with a positive charge
c. an ion with a negative charge
d. an isotope with no charge

Explanation:

• An ion is formed when an atom gains or loses electrons.
• Electrons have a negative charge. When an oxygen atom gains two electrons, it gains two negative charges.
• An isotope is related to the number of neutrons in an atom, not the gain or loss of electrons.

Answer:

C. An ion with a negative charge