Is a metallic bond a cation and proton or cations and electrons?

Define the kinetic molecular theory

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

Helium decays to form lithium. which equation correctly describes this decay?