Question

1. Mass of fluorine atom is 31.5506 x 10^-24 (10 raised to -24)g. What is its atomic mass in unified mass?​

Answer 1

Answer:

19u

Explanation:

The unified atomic mass of an element is equal to the mass of 1/12th the mass of an atom of carbon-12.

mass of one carbon atom = 1.994* 10^-23g

One a.m.u (unified atomic mass) = (1.994* 10^-23)/12 g

Therefore a.m.u (unified atomic mass) of a fluorine atom = (Mass of fluorine atom is 31.5506 x 10^-24 g. )/One a.m.u (unified atomic mass)

Hence,

atomic mass in unified mass of fluorine atom is,

= (31.5506 * 10^-24) / ((1.994*10^-23)/12) u                 (u = atomic mass unit)    

= 18.9873 u

19u (approx)