Bohr produced an early model of the atom. Bohr’s model was eventually replaced by the cloud model of the atom. What is the main reason scientists use a model of an atom?

Group of answer choices

An atom is very small, and a model aids in its study.

All atoms are too dangerous to study without a model.

Most atoms are too far away for scientists to study in a lab.

Most atoms are too large to study in a lab.