How many α-particles are emitted in the nuclear transformation: 84Po215⟶82Pb211+?2He4
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a
0
b
1
c
2
d
3
answer is B.
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Detailed Solution
Let x α-particles are emitted. 84Po215⟶82Pb211+x2He4Equating atomic mass of both sides215 = 21,1 + 4x∴x=215−2114=44=1Therefore, one α-particle is emitted.