The number of polar covalent bonds in
nh₃ is?

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.

What lessons does the history and study of the periodic table offer to other fields of science, and the pursuit science more generally

Is ice cream a mechanical mixture or solution why?