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A radioactive nucleus X undergoes sponta...

A radioactive nucleus `X` undergoes spontaneous decay in the sequence
z X to z-1 B to z-3 C to z-2 D, where Z is the atomic number of element Z. The possible decay particles in the sequence are:

A

`beta^+, alpha, beta^-`

B

`beta^-, alpha, beta^+`

C

`alpha, beta^-, beta^+`

D

`alpha, beta^+, beta^-`

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