Choose the INCORRECT statement.
◦ Cu, Ag, and Au are the preferred metals for coins because they are durable and resistant to corrosion.
◦ Cu, Ag, and Au are used in the electronics industry because of their conductivity.
◦ Cu, Ag, and Au do not readily react with HCl although most metals do.
◦ Tarnish is black Ag2S.
◦ Silver is the basis for the world's monetary reserve.