Mercury is an element. Which of the following would be the same for all atoms of mercury?

A. the number of protons

B. the number of neutrons

C. the number of electrons

D. the total number of protons and neutrons

The number of protons for all atoms of mercury will remain the same while different isotopes may have different number of neutrons.

The number of protons

for all atoms of mercury will remain the same while different isotopes may have different number of neutrons.

Explanation:

Atoms should have equal numbers of protons and electrons. In our example, an atom of thirty six|chemical element, it should contain thirty six electrons since it contains 36 protons. Electrons are organized around atoms in a very special method.