variable valency of gold
Eg. The short name of the element is called symbol. Radicals (ions) are atoms or group of atoms which carry positive or negative charge and behave as a single unit during a chemical reaction. The Latin name for mercury, hydrargyrum, means "liquid silver." 1. A lithium atom has one outer shell electron, so it’s usual valence is +1, but it can lose the electron and have a valence of -1. document.writeln('