Answer: The particles in a solid are packed very close to each other.
B solvent because it is socking in
Cu+ p=29 e=28 n=34
S2- p=16 e=18 n=16
Pb4+ p=82 e=78 p=125
I hope i did it right :))
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons.
