What causes atoms to form covalent bonds? in a covalent bond, two atoms are held together by the attraction the number of covalent bonds that an atom can form depends on the number in the atom.

What diagram shows the ionic compound of magnesium oxide

What does the symbol (–hfus) indicate in a phase change?

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)