The structure of an atom is best described as:   1.  neutrons in orbit about a nucleus of protons bound to electrons.2. electrons and neutrons in orbit about a nucleus of protons  3. protons and neutrons in orbit about a nucleus of electrons  .4. electrons in orbit about a nucleus of protons and neutrons

Option (4) is the correct answer.

Explanation:

An atom consists of three types of sub-atomic particles which are electrons, protons, and neutrons.

Protons have a positive charge and neutrons have no charge. Whereas electrons have a negative charge.

Protons and neutrons are placed inside the nucleus of an atom. On the other hand, electrons revolve around the nucleus of the atom.

Thus, we can conclude that the structure of an atom is best described as electrons in orbit about a nucleus of protons and neutrons.

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the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying