A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.A substance containing two or more chemical elements, at least one of which is metal.