1.

An element ._(Z)M^(A) undergoes an alpha- emission followed by two successive beta- emissions. The element formed is ……………………….. .

Answer»

Solution :`._(Z)M^(A)overset(-alpha)RARR._(z-2)M^(Z-4)``overset(-BETA)rarr._(Z-1)M^(A-4)overset(-beta)rarr._(Z)M^(A-4)`


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