2 years ago

What is hydrogen ?,,,

2 answers:

6 0

Answer:

Hydrogen is the lightest element in the periodic table. Hydrogen is a gas of diatomic molecules and is colorless, odorless, non-toxic, and highly combustible. It is the most abundant chemical substance in the universe as it constitutes roughly 75% of all normal matter.

Ket [755]2 years ago

5 0

Answer:

It is an odorless, nontoxic, highly combustible substance. It is the chemical substance with the atomic number 1 and the symbol H

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