MCQ
Which of the following statements about the electron is incorrect?
- AIt is a negatively charged particle.
- BThe mass of electron is equal to the mass of neutron.
- CIt is a basic constituent of all atoms.
- DIt is a constituent of cathode rays.
✓
Answer
- The mass of electron is equal to the mass of neutron.
Explanation:
The mass of electron is very small as compared to the mass of the neutron. Mass of electron = 9.1 × 10-31kg Mass of neutron = 1.674 × 10-27kg.
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