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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