Molecular mass of hydrogen (H2) is___u.
Atomic mass = No. of protons + No. of neutrons
So, atomic mass of hydrogen (H) = 1 + 0 = 1 u
Molecular formula of hydrogen is (H2) so molecular mass will be 2 u
Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses: H = 1 u; Br = 80 u)
Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is -