Solid matter is mostly empty space. The reason solids don't fall through one another is because
A) atoms are constantly vibrating, even at absolute zero.
B) of gravitational forces.
C) of nuclear forces.
D) of electrical forces.
E) none of these

Question

Quizplus · Accepted Answer

The primary reason solids don't fall through one another is due to electrical forces. Atoms in solid matter repel each other because of the electron clouds surrounding their nuclei, creating a force that prevents them from passing through each other.

Solid Matter Is Mostly Empty Space