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A radioactive nucleus undergoes a serie...

A radioactive nucleus undergoes a series of decay according to the scheme
`A overset(alpha)rarr A_(1) overset(beta^(-))rarr A_(2) overset(alpha)rarr A_(3)^(172) overset(gamma)rarr A_4`.

Text Solution

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The successive process may be expressed as
`._(72)A^(180) overset(alpha)rarr_(70) A_(1)^(176) overset(beta^(-))rarr_(71) A_(2)^(176) overset(alpha)rarr_(69) A_(3)^(172) overset(gamma)rarr_(69) A_(4)^(172)`.
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