Question

Mass of an electron is about _____ times the relative mass of hydrogen atom.

• A. $\frac{1}{1840}$
• B. $\frac{1}{12}$
• C. $\frac{1}{100}$
• D. $\frac{1}{1240}$

Answer 1

The correct option is A $\frac{1}{1840}$

Electrons are negatively charged particles found in all atoms. The mass of an electron is about $\frac{1}{1840}$ times the relative mass of hydrogen atom.