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The half-life of ^226Ra is 1602 y.Calcul...

The half-life of ``^226Ra` is 1602 y.Calculate the activity of 0.1g of `RaCl_2` in which all the radium is in the form of ``^226Ra`.Taken atomic weight of Ra to be the 226 g `mol^-1` and that of C1 to be `35.5 g mol^-1`.

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