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Question
Which of the following statements about the electron is incorrect?
Options
It is a negatively charged particle.
The mass of electron is equal to the mass of neutron.
It is a basic constituent of all atoms.
It is a constituent of cathode rays.
MCQ
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Solution
The mass of electron is equal to the mass of neutron.
Explanation:
The mass of an electron is equal to the mass of a neutron.
The neutron is heavier than the electron as
Mass of the neutron = 1.67 × 10–27 kg
Mass of the electron = 9.11 × 10–31 kg
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