1.

In the radioactive decay {:(._(z)X^(A) rarr _(Z+1)Y^(A)rarr_(Z-1)Z^(A-4) rarr_(Z-1)Z^(A-4)),("high energy" "low energy"):} the sequence of the radiation emitted is :

Answer»

`ALPHA, BETA,GAMMA`
`gamma, alpha,beta`
`beta,gamma, alpha`
`beta,alpha,gamma`

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