Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The number of β β -particles emitted in radioactive change 
is
Text Solution
Verified by ExpertsThe correct answer is:
C
Suppose the no. of α α -particles emitted 
and
the no. of 
-particles emitted = y. Then
equating the mass number on both sides, we get
238 = 206 + 4 x + 0 y or 4 x = 32, x = 8
equating the atomic number on both sides, we get
92 = 82 + 2 x – y
92 = 82 + 2× 8 – y
y = 6
Hence 8 
and 
are emitted.
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