What causes atoms to form covalent bonds? In a covalent bond, two atoms are held together by the attraction between (each item in the shared electrons, the nuclei of the two atoms, the valence electrons of the two Atoms). The number of covalent bonds that an atom conform depends on the number of (Energy levels, protons and neutrons, valence electrons) in the Adam.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.