Question

14 which of the following best describes the earliest model of the atom? select two correct answers. atoms are indivisible. atoms have wave - like electrons. atoms are hard spheres. atoms have a small nucleus. atoms have the same mass.

Explanation:

The earliest atomic model (Dalton's model) proposed that atoms are indivisible and are like hard, indestructible spheres. The idea of wave - like electrons is from quantum mechanics (later), a small nucleus is from Rutherford's model (later), and atoms of different elements have different masses, so "atoms have the same mass" is incorrect. So the correct statements about the earliest model are "Atoms are indivisible" and "Atoms are hard spheres".

Answer:

A. Atoms are indivisible.
C. Atoms are hard spheres.