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in Physics by (71.1k points)

Masses of two isobars 29Cu64 and 30Zn64 are 63.9298 u and 63.9292 u. It can be concluded from this 

(1) Both isobars are stable 

(2) Zn64 is radioactive decaying to Cu64 through β decay 

(3) Cu64 is radioactive decaying to Zn64 through γ decay 

(4) Cu64 is radioactive decaying to Zn64 through β decay

1 Answer

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Best answer

Correct option : (4)

Explanation : 

In β decay process atomic number increases by 1 whereas mass number remains same. Hence the possible nuclear reaction is

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