Enter the masses of these particles in kilograms. Express the masses of proton and neutron using six significant figures. Express the mass of electron using two significant figures. Enter your answers numerically separated by commas.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

i believe the answer is three water molecules