Question

What is the absolute mass of an electron ?

• A. $9.1*{10}^{-27}kg$
• B. $9.1*{10}^{-31}kg$
• C. $1.67*{10}^{-27}kg$
• D. $3.9*{10}^{-31}kg$

Answer 1

The correct option is B

$9.1*{10}^{-31}kg$

The explanation for the correct answer

Option B

The absolute mass of an electron = $9.1*{10}^{-31}\mathrm{kg}$

• Electrons are negatively charged subatomic particles.
• Absolute charge of electron = $1.67*{10}^{-19}\mathrm{C}$

The explanation for the incorrect answers

Option B is incorrect.

Option C Mass of proton or neutron = $1.67*{10}^{-27}\mathrm{kg}$

Option D is incorrect.

Conclusion: Hence Option B is correct.