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How many alpha-particles are emitted in ...

How many `alpha`-particles are emitted in the nuclear transformation: `._(84)Po^(215) rarr ._(82)Pb^(211) + ? ._(2)He^(4)`

A

0

B

1

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
When `""_(84)PO^(215)` changes to `""_(82)Pb^(211)` Change in mass no. =215-211=4
`therefore alpha`-particle given `=4//4 =1`
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