1.

To what stable isotope ""_(103)^(257)Lw decay after having been produced by artificial means ?

Answer»

`""_(83)^(209)Bi`
`""_(82)^(208)Pb`
`""_(82)^(206)Pb`
`""_(82)^(207)Pb`

Solution :`""_(103)^(257)Lw` is a member 4n+1 series, so it WOULD PROBABLY decay to `""_(89)^(209)Bi`


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