How is the number 7.89 x 10^3 expressed in regular numerals?
7,890
78,900
6789

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.

Ithink is a because if say increased in electronegativity