1.

A positron is emitted from ""^(23)Na. The ratio of atomic mass and atomic number of the resulting nucleide is :

Answer»

`22//10`
`22//11`
`23//10`
`23//12`

Solution :`""_(11)^(23)Nato_(10)^(23)NE+""_(+)overset(0)1e`
Ratio =`23/10`


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