1.

In the radioactive decay ._(92)X^(232) rarr ._(89)Y^(220), how many alpha and beta-particles are ejected from X to form Y

Answer»

`3 ALPHA and 3 beta`
`5 alpha and 3 beta`
`3 alpha and 5 beta`
`5alpha and 5 beta`

SOLUTION :`._(92)X^(232) rarr ._(89)Y^(220) + x_(2) he^(4) + y ._(-1)E^(0)`
No. of `alpha -`PARTICLES `= (232 - 220)/(4) = 3`
No. of `beta-`particles `= 2 xx - 92 + 89 = 3`


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