In a radioactive decay chain, the initial nucleus is 
. At the end there are 
-particles and 
-particles which areemitted. If the end nucleus is 
and 
are given by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
When one 
-particle emitted then danghter nuclei has 
unit less mass number 
and 
unit less atomic 
number 
He
particle
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