1.

Identify [A] and [B] in the following ._(89)^(227)Ac overset(-beta)rarr [A] overset(-alpha)rarr [B] overset(-alpha)rarr Rn

Answer»

Po, Rn
Th, Po
Ra, Th
Th, Ra

Solution :`._(89)^(227)Ac overset(-beta)RARR ._(90)^(227)Th overset(-alpha)rarr ._(88)^(223)Ra overset(-alpha)rarr ._(86)^(219)Rn`


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