Question:
Which of the following statements about the electron is incorrect?
(i) It is a negatively charged particle.
(ii) The mass of an electron is equal to the mass of a neutron.
(iii) It is a basic constituent of all atoms.
(iv) It is a constituent of cathode rays.
Solution:
Option (ii) The mass of an electron is equal to the mass of a neutron is the answer.
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