Which of the following pieces of information about the element lithium describes the atomic number only

Which material burns faster? metal aluminum

If a particle has z = 25 and 23 electrons, what is its charge?

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-.