What do 2 or more atoms form when they share electrons in a chemical bond
element
mixture
ionic compound
molecule

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

The closer the atoms are to becoming ionic the more highly dense the negatively charged side gets.

Density= mass/volume so 5.1 divided by 4.7 is  5.1 / 4.7 =1.08510638298round to the correct number of sig figs

It's called the falling actionwrong subject by the way