1.

Sulphur-35 (34.96903 amu) emits a beta - particle but no gamma- rays, the product is chlorine -35 (34.96885 amu). The maximum energy emitted by the beta- particle is

Answer»

0.016767 MeV
1.6758 MeV
0.16758 MeV
16.758 MeV

Solution :Mass defect = mass of SULPHUR - mass of CHLORINE
`= 34.96903 - 34.96885 = 0.00018g`
Binding ENERGY = mass defect `xx 931`
`= 0.00018 xx 931`
`= 0.1675 MeV`


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