Which statement is true about gold and helium? a. they are both made of subatomic particles. b. one of made of protons and the other of only electrons. c. they both occur as a gas at room temperature. d. they are both used in balloons.

Answer;

A. They are both made of subatomic particles.

Explanation;

-All the atoms of any element are made of particles, gold and helium are atoms that both contain subatomic particles.

-Particles that are smaller than the atom are called subatomic particles. The three main subatomic particles that form an atom are protons, neutrons, and electrons. Protons and neutrons make up the nucleus of an atom. All protons are identical to each other, and all neutrons are identical to each other.

-Protons have a positive electrical charge while neutrons have no electrical charge and are said to help hold the protons together. Electrons on the other hand are negatively charged and found on the energy levels.

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the correct answer is c   with the systems