A) a proton and a neutron
B) a proton and two \[\alpha \]-particles
C) an\[\alpha -\]particle and a \[\beta \]-particle
D) two p-particles and a proton
Correct Answer: C
Solution :
Decrease in mass number\[=238-234=4\] No. of\[\alpha -\]particles emitted\[=\frac{4}{4}=1\] Decrease in atomic number due to emission of 1\[\alpha -\]particle is 2, but now atomic number is 91, hence number of\[\beta -\]particles\[~=91+2-92=1\].You need to login to perform this action.
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