Nuclei - Result Question 88

90. A free neutron decays into a proton, an electron and

[1997]

(a) a beta particle

(c) an anti-neutrino

(b) an alpha particle

(d) a neutrino

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Answer:

Correct Answer: 90. (c)

Solution:

  1. (c) 0n11p1+1e0+X

X must have zero charge and almost zero mass as electron is emitted. Hence X must be anti-neutrino.



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