Number of moles of CCl4 = Mass\ of\ CCl_4 / Molecular\ mass\ of\ CCl_4
= 15.4 \over 154
∵ = 0.1 mole
1 mole of CCl4 = 6.022 × 1023 molecules of CCl4
∴ 0.1 mole of CCl4= 0.1 × 6.022 × 1023 moles of CCl4
= 6.022 × 1022 molecules of CCl4
We know that one atom of carbon has 6 electrons and one atom of chlorine has 17 electrons.
Therefore, one molecule of CCl4 will contain 6 + (4 × 17) = 74 electrons.
∴ Number of electrons in 6.022 × 1022 molecules of CCl4
= 74 × 6.022 × 1022 electrons
= 445.6 × 1022 electrons
= 4.456 × 1024 electrons