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If the radiation of Mo (Z = 42) has a we...

If the radiation of `Mo (Z = 42)` has a wevelength of `0.71Å`, calculate wevelength of the corresponding radiation of `Cu,i.e. , k_(alpha)for Cu (Z = 29) assuming b = 1`.

Text Solution

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According to Moseley's law: `sqrt v = a (Z - 1)`
`implies (Z - 1)^(2) prop v or (Z - 1)^(2) prop 1// lambda`
`implies ((Z_(Mo) - 1)^(2))/((Z_(Cu) - 1)^(2)) = (lambda_(Cu))/(lambda_(Mo)) or lambda_(Cu) = lambda_(Mo) ((Z_(Mo) - 1)^(2))/((Z_(Cu) - 1)^(2))`
`= 0.71 xx ((41)/(28)) = 1.52 Å`
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