1.

`._(13)^(27)Al` is a stable isotope. `._(13)^(29)Al` is expected to disintegrate byA. `alpha-` emissionB. `beta-emissionC. Positron emissionD. Proton emission

Answer» Correct Answer - B
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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