NEET 2007 Physics question

In radioactive decay process, the negatively charged emitted particles are

(1)the electrons orbiting around the nucleus
(2)the electrons present inside the nucleus
(3)the electrons produced as a result of the decay of neutrons inside the nucleusCorrect
(4)the electrons produced as a result of collisions between atoms

Answer: (3)

Solution

The nucleus consists only of protons and neutrons; electrons are not present inside it, and orbital electrons are not involved in radioactivity. In decay a neutron inside the nucleus changes into a proton, with emission

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Question ID VK-089927