The difference in the mass of 100 moles of each of sodium atoms and sodium ions is `5.48002` g. Compute the mass of an electron.

Explanation

Sodium (Na) and sodium ion `(Na^(+))` differ in one electron. This means that 100moles of Na atoms and `Na^(+)` ions differ in electrons=100mol
No. of electron in 100moles=`100xx6.022xx10^(23)=6.022xx10^(25)`
`"Mass of "6.022xx10^(25)"electrons"=5.48002g`
`"Mass of one electron"=((5.48002g))/((6.022xx10^(25)))=9.1xx10^(-28)=9.1xx10^(-31)kg`