Protons, Neutrons, and Electrons
|
H |
|
Hydrogen |
The simplest element is called hydrogen. The symbol H is used to represent hydrogen
in chemical reactions. Hydrogen exists as the dimer which is written as H2 where
the subscript 2 indicates two hydrogen atoms.
Hydrogen is a gas at room temperature and atmospheric pressure. It reacts with oxygen in the air to form water.
(c) Copyright 1999. All rights reserved.