Question

What is the total number of electrons present in one mole of ethane?

• A. $6.022\times 10^{23}$
• B. $10.022\times 10^{25}$
• C. $108.4\times 10^{23}$
• D. $1.084\times 10^{23}$

Answer 1

Answer: (C)

The formula of ethane is $\left(C{H}_3-C{H}_3\right)$,
i.e.It has two carbon atoms and each contain six electrons.
Also, it has six hydrogen atoms, which contain 1 electron.
Thus, total number of electrons $=6+6+6=18$
Therefore, one mole of ethane has
Therefore, one mole of ethane has
$18\times 6.02\times 10^{23}=108.36\times 10^{23}$
i.e. $108.4\times 10^{23}$ electrons
( $\because 1mol=6.02\times 10^{23}$ particles)