Which of the following statements

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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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