Question

The relation 5 B 8 ----- 4 Be 8 takes place due to 5B8 ___ 4Be8​

Answer 1

Answer

The mass defect of a nuclear reaction is the difference in the mass of the products and the mass of the reactants.

The mass defect of the nuclear reaction  

5

​  

B  

8

→  

4

​  

Be  

8

+  

1

​  

e  

0

 is Δm. The correct expression is

(C) Δm = atomic mass of (  

4

​  

Be  

8

−  

5

​  

B  

8

) + mass of one positron

The wrong expressions are

(A) Δm = atomic mass of (  

4

​  

Be  

8

−  

5

​  

B  

8

)

(B) Δm = atomic mass of (  

4

​  

Be  

8

−  

5

​  

B  

8

) + mass of one electron

(D) Δm = atomic mass of (  

4

​  

Be  

8

−  

5

​  

B  

8

) _ mass of two electron

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Answer 2

Explanation:

The relation 5 B 8 ----- 4 Be 8 takes place due to 5B8 ___ 4Be8