Which has the greater mass? 1 l copper or 1 l silver?

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?

Which element is the least metallic between cadmium, silver, zinc, or iron?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17