Ans. Atomic Weight
The
mass of the atom of an element relative to that of carbon as 12, is called the
relative atomic mass or atomic weight. On the atomic mass scale, II = 1, 0 =
12, O = 16 and so on.
Molecular Weight
The
mass of the molecule of a compound relative to the mass of carbon atom as 12.
is called its relat ive molecular mass or molecular weight,
The
terms atomic weight and molecular weight are still widely used although
technically relative atomic mass and relative molecular mass are the correct
ones and are now recommended by SI.
Formula Weight
The
term formula weight is interchangeably used with molecular weight. The sum of
the atomic weights of the atoms in a chemical formula, is referred to as the
formula weight. Thus the formula weight of methane is 16.
No comments:
Post a Comment