Which of the following is the best description of an atom's physical structure?
A) An atom is a solid mass of material.
B) The particles that form an atom are equidistant from each other.
C) Atoms are little bubbles of space with mass concentrated at the center of the bubble.
D) Atoms are little bubbles of space with mass concentrated on the outside surface of the bubble.

Question

Quizplus · Accepted Answer

An atom is mostly made up of empty space, and the mass is concentrated in the center in the form of a nucleus, composed of protons and neutrons. The electrons, which have negligible mass, orbit around the nucleus in electron clouds. This makes option C the most accurate description of an atom's physical structure. Options A and B are incorrect, as atoms are not solid and the particles are not equidistant from each other. Option D is also incorrect, as mass is not concentrated on the outside surface of the atom.

Which of the Following Is the Best Description of an Atom's