A nucleus of disintegrates to in about a billion years by emitting 7 alpha particles…

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

9. A nucleus of

{ }^{235} \mathrm{U}_{92}

disintegrates to

{ }^{207} \mathrm{~Pb}_{82}

in about a billion years by emitting 7 alpha particles and x beta particles, where x is (A) 3 (B) 4 (C) 5 (D) 6