# data[].attributes.body
Hydrogen fuel cells are a clean, reliable, quiet, and efficient source of high-quality electric power. They use hydrogen as a fuel to drive an electrochemical process that produces electricity, with water and heat as the only by-products. The two main applications for hydrogen fuel cells are in stationary power sources and hydrogen fuel cell vehicles

# data[].attributes.body
Henry cavendish discovered hydrogen, on 1766.

# data[].attributes.body
A hydrogen atom is an atom of the chemical element. The electrically neutral atom contains a single positively charged proton  and a single negatively charged electron bound to the nucleus by the force. Atomic hydrogen constitutes 75% of the baryonic mass of the universe.

# data[].attributes.body
Hydrogen gas (H₂) is highly flammable and will burn in air at a very wide range of concentrations between 4 percent and 75 percent by volume. The enthalpy of combustion for hydrogen is -286 kJ/mol, and is described by the equation. Hydrogen gas can also explode in a mixture of chlorine (from 5 to 95 percent). These mixtures can explode in response to a spark, heat, or even sunlight.

# data[].attributes.body
Hydrogen is the smallest chemical element because it consists of only one proton in its nucleus. Its symbol is H, and its atomic number is 1. It has an average atomic weight of 1.0079 amu, making it the lightest element. Hydrogen is the most abundant chemical substance in the universe, especially in stars and gas giant planets. At standard temperature and pressure, hydrogen is a nontoxic, nonmetallic, odorless, tasteless, colorless, and highly combustible diatomic gas with the molecular formula H₂.

# data[].attributes.body
hydrogen
symbol- H
atomic number- 1