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A nucleus of radium (.(88)Ra^(226)) d...

A nucleus of radium ` (._(88)Ra^(226))`
decays to `._(86)Rn^(222)`
by emisson of `alpha-` particle `(._(2)He^(4))` of energy `4.8MeV`. If meass of `._(86)Rn^(222)=222.0 a.m.u` mass of `._(2)He^(4)` is `4.003 ` a.m.u. and mass of `._(88)Ra^(226)` is `226.00826` a.m.u., then calculate the recoil energy of the daughter nucleus. Take ` 1 a.m.u. =931MeV`

A

0.5 Me V

B

0.0866 Me V

C

012 Me V

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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