MarksRiser
MarksRiser
AIPMT PRELIMS2011Physics-Nuclear Physics

AIPMT PRELIMS 2011 Physics Radioactive Decay MCQ Question

Type: MCQ-conceptual-Medium-Class 12

A nucleus m/nX emits one α particle and two β-particles. The resulting nucleus is

A

m−4/n−2Y

B

m−6/n−4Z

C

m−6/nZ

D

m−4/nX

Correct Answer

Option D

Detailed Explanation

α-emission decreases mass number by 4 and atomic number by 2. One β-emission increases atomic number by one but leaves mass number unchanged.

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