Class 12 Chemistry Nuclear Chemistry Radioactivity and a,b and g rays

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What happens when an $\alpha$-particle is emitted?

AIPMT 1989 All AIPMT

A
Mass number decreases by $12$ units,atomic number decreases by $4$ units
B
Mass number decreases by $4$ units,atomic number decreases by $2$ units
C
Only mass number decreases
D
Only atomic number decreases

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Class 12 Questions

Class 12

Chemistry Questions

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Nuclear Chemistry

Subtopic

Radioactivity and a,b and g rays

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