The atomic weight of hydrogen is 1,007 94 ± 0,000 07 atomic units of mass.
an oxygen and a hydrogen atom do not weight the same
The atomic weight of hydrogen is 1,007 94 ± 0,000 07 atomic units of mass.
The conventional standard atomic weight of the hydrogen atom is 1,008 amu.
Hydrogen atom has an atomic weight of approx. 1 and only 1 proton.
The atomic weight (not mass) of hydrogen is: [1,00784; 1,00811]; the conventional value is 1,008. The atomic weight (not mass) of oxygen is: [15,99903; 15,99977]; the conventional value is 15,999.
Atomic weight is a unit of measure whose unity value is that of the mass of a Hydrogen atom "1".
The smallest atom is hydrogen.
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Atomic mass unit is a unit of mass for all chemical elements, not only for hydrogen. The atomic weight of hydrogen is [1,00784; 1,00811]; the conventional atomic weight is 1,008. 1 atom is equal to 1 amu.
the atom with the least mass is the hydrogen atom
Hydrogen atoms are the smallest known elements, and therefore smaller than oxygen atoms (according to atomic weight and atomic mass).
the average atomic weight of all the hydrogen in the universe is just a bit greater than the mass of a protium atom.