A radioactive sample contains 2.2 mg of pure `._6C^(11)` , which has a life period of 1224s. Calculate (i) number of atoms present initially. (ii) the activity when `5 mu g` of the sample will be left.

A raioactive sample contains 2.2 mg of pure ._(6)^(11)C which has half-life period of 1224 seconds. Calculate (i) the number of atoms present initially (ii) the activity when 5 mu g of the sample will be left.

A raioactive sample contains 2.2 mg of pure ._(6)^(11)C which has half-life period of 1224 seconds. Calculate (i) the number of atoms present initially (ii) the activity when 5 mu g of the sample will be left.

A radioactive sample contains 2.2 mg pure ""_(6)^(11)C which has half-life period of 1224 second Calculate. (i) the number of atoms present initially. (ii) the activity when 5mug of the sample will be left.