Q16
Which of the following particles is the lightest?
A.
Nucleus
B.
Electron
AnswerC.
Proton
D.
Meson
Answer: Option B
Solution
Answer: Option B
Solution:
An electron is a negatively charged subatomic particle.It can be either free or bound to the nucleus of an atom.
The invariant mass of an electron is approximately 9.109×10−31 kilograms,