Symbol: A one or two-letter abbreviation used to represent the element. Atomic number: The number of protons in the nucleus ...

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

That pun is based on the fact that the main building blocks in the branch of science are chemical elements, pure substances made from a single type of atom. But how many of ... individual element its ...

join with another hydrogen atom as a pair, making a molecule. Sometimes it is easy to tell which element a symbol stands for. For example, C stands for carbon and Li stands for lithium.