Question

The molecular formula of hydrogen is ${\mathrm{H}}_2$.

What do you understand by this?

Answer 1

Hydrogen:

• Hydrogen is a chemical element having an atomic number equal to one.
• It was discovered by Henry Cavendish.
• It is a gas with no color and odor and has the lowest density of all gases.
• It is a highly inflammable gas.
• It exists in the diatomic form (two atoms of the same element) in nature, so 2 atoms of hydrogen make one molecule ${\mathrm{H}}_2$.
• Two hydrogen atoms form a covalent bond by sharing electrons and form a diatomic molecule.