What is the most likely reason
that nonmetals are electrical insulators?

As you move from right to left on the periodic table the atomic radius fill in the blank

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Stage in which a typical star has completely stopped fusion