Question

Among the following nuclides, the highest tendency to decay by (${\beta }^{+}$) emission is ?

• A. ${Cu}^{59}$
• B. ${}^{63}Cu$
• C. ${}^{67}Cu$
• D. ${}^{68}Cu$

Answer 1

The correct option is A ${Cu}^{59}$

Explanation:

Copper $C{u}_{29}$ has two stable isotopes, $C{u}^{63}$ and $C{u}^{65}$ along with 27 radio isotopes. The most stable radio isotope is $C{u}^{67}$ with a half-life of $61.83$ hours, while isotopes with atomic masses $59$ is unstable and tend to undergo ${\beta }^{+}decay$ because it is unstable and short half-life.

Hence option A is correct