Which statement is true about nitrogen and oxygen?

Hello. This question is incomplete. The full question is:

"Which statement is true about nitrogen and oxygen?  A. They make up about 99.9% of the human body.  B. They are both made of protons, neutrons, and electrons.  C. They are both used to make water molecules.  D. Neither contains subatomic particles."

B. They are both made of protons, neutrons, and electrons.

Explanation:

Nitrogen and oxygen are elements known to all of us. An oxygen molecule is an oxygen atom and a nitrogen molecule is a nitrogen atom.

As we know, all atoms are formed by three particles: protons, neutrons and electrons. For this reason, we can say that both oxygen and nitrogen are composed of protons, neutrons and electrons. For this reason, the letter B is the correct alternative.

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