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this is KCET question... The atomic mass of C-12 is 12.0032. Find the mass defect. a) 0.03 b) 0.0034 c) 0.034 c) none The answer is 0.0034 Howz that possible ... isn't mass defect for a nucleus Z X A - Z having atomic no. Z and mass no. A = Zm p + (A - Z)m n - m( Z X A - Z ) ??? But what is used here seems as if mass defect = M - A where M is actual mass and the mass number A (not even a mass). Please explain this concept to me .... from where did this weird formula of difference of a mass and a number came for mass defect ??


this is KCET question...
 
The atomic mass of C-12 is 12.0032. Find the mass defect.
a) 0.03 b) 0.0034 c) 0.034 c) none
 
The answer is 0.0034
 
Howz that possible ...
isn't mass defect for a nucleus ZXA - Z having atomic no. Z and mass no. A
= Zmp+ (A - Z)mn - m( ZXA - Z )  ???
 
But what is used here seems as if mass defect = M - A
where M is actual mass and the mass number A (not even a mass).
 
Please explain this concept to me .... from where did this weird formula of difference of a mass and a number came for mass defect ?? 


Grade:11

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