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The calculated mass of ""(20)Ca^(40) is...

The calculated mass of ` ""_(20)Ca^(40)` is 40.328 u. It releases 306.3 MeV energy in a nuclear process . Its isotopic mass is

A

39.998

B

40.657

C

0.329

D

`2.85xx10^(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`BE= Deltam xx 931 MeV `
` 306.3 = Delta m xx 931`
`Delta=0.3290`
`Deltam`=calcualted mass - isotopic mass
- Isotopic mass =` Delta m`- calculated mass
=0.3290-40.328
=- 39.998
`:.` Isotopic mass = 39.998
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