Question #1847d

1 Answer

Hydrogen is the lightest element in the periodic table.


It has atomic number 1, and the chemical symbol #"H"#.

It is the most abundant element in the universe.

At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible gas.

It is present in almost all organic compounds.

Most of the hydrogen on earth exists in molecules of water (#"H"_2"O"#).