Question

a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?

Answer 1

The substance is Mercury. It has 80 electrons revolving around nucleus and 80 protons inside nucleus.

Step-by-step explanation:

Atomic number of atom represent the number of electrons and protons of the atom. Thus,

Number of electrons = number of protons = 80

The atom which has atomic number 80 in the periodic table is Mercury.