1.

._(13)^(27)Al is a stable isotope. ._(13)^(29)Al is expected to disintegrate by

Answer»

`alpha-` emission
`BETA-emission
Positron emission
Proton emission

Solution :The `(n)/(p)` RATIO of `._(13)Al^(29)` places it above the belt of STABILITY and thus it emits `beta-` particles.


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