Calendar p. 128 2. Nonmetals are the 17 elements in the upper right hand corner of the periodic table. They have properties opposite of metals. They gain electrons in ionic compounds.
Covalent bond is the bond formed between two atoms that share electrons.
A polyatomic ion is two or more atoms covalently joined together with a net charge. An ionic bond is the strong attraction between positive and negative ions. A binary compound is formed with one metal and one nonmetal.