Question

Define the following terms:

(b) Relative Atomic Mass(atomic weight)

Answer 1

Relative Atomic Mass :

• One of the most important concepts which come out of Dalton’s atomic theory was that of relative atomic mass or relative atomic weight.
• This is done by expressing the mass of one atom with respect to a fixed standard.
  Relative atomic mass [RAM]=$\frac{\mathrm{Mass}\mathrm{of}\mathrm{one}\mathrm{atom}\mathrm{of}\mathrm{an}\mathrm{element}}{\left({\displaystyle \frac{1}{12}}\right)\times \mathrm{Mass}\mathrm{of}\mathrm{one}\mathrm{C}-12\mathrm{Atom}}$
• R.A.M =$\frac{\mathrm{Atomic}\mathrm{mass}}{1\mathrm{AMU}}$
• Atomic mass = R.A.M × 1 AMU