Question

what is hydrogen? Explain the classification of
hydrogen​

Answer 1

Answer:

Hydrogen

Hydrogen is the chemical element with the symbol H and atomic number 1. With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table. Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.

Answer 2

Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula H2. It is colorless, odorless, non-toxic, and highly combustible. For the most common isotope of hydrogen (symbol 1H) each atom has one proton, one electron, and no neutrons.