Question

The number of electrons which will together weigh one gram is:

• A. $1.098\times {10}^{27}$ electrons
• B. $9.1096\times {10}^{31}$ electrons
• C. 1 electrons
• D. $1\times {10}^4$ electrons

Answer 1

The correct option is A $1.098\times {10}^{27}$ electrons

Mass of a electrons = $9.1096\times {10}^{-31}Kg$
1g or ${10}^{-3}kg=\frac{1}{9.1096\times {10}^{-31}}\times {10}^{-3}$
=$1.098\times {10}^{27}$ electons