5 Explain

D. Formula mass with an example.

D. Formula mass with an example.

Example:

NaCl is just the formula that is used to represent sodium chloride though it is not a molecule

.In such compounds, the formula (i.e., NaCl) is used to calculate the formula mass instead of molecular mass.

e.g. Formula mass of sodium chloride = atomic mass of sodium + atomic mass of chlorineatomic mass of chlorine

= 23.0 u + 35.5 u = 58.5 u