NEET Physics Nuclei Questions Solved

A nucleus AZA emits an α-particle. The resultant nucleus emits a β+ particle. The respective atomic and mass no. of the final nucleus will be 
(a) Z – 3, A – 4            (b) Z – 1, A – 4
(c) Z – 2, A – 4            (d) Z, A – 2

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