(a) State the laws of radioactive decay and deduce the relation: N=N_(0)e^(-lambdat) N=N_(0)e^(-lambdat) Where the symbols have their usual meaning. (b) (i) Write symbolically the process expressing the beta^(+)decay of ""_(11)Na^(22). Also write the basic nuclear process underlying this decay. (ii) Is the nucleus formed in the decay of the nucleus ""_(11)Na^(22) an isotope or isobar?

(a) State the laws of radioactive decay and deduce the relation: N=N_

1.	(a) State the laws of radioactive decay and deduce the relation: N=N_(0)e^(-lambdat) N=N_(0)e^(-lambdat) Where the symbols have their usual meaning. (b) (i) Write symbolically the process expressing the beta^(+)decay of ""_(11)Na^(22). Also write the basic nuclear process underlying this decay. (ii) Is the nucleus formed in the decay of the nucleus ""_(11)Na^(22) an isotope or isobar?
Answer» Solution :(i) `""_(11)Na^(22) to ""_(+1)e^(0) + ""_(10)Ne^(22)` + v (neutrino) (ii) As a DIFFERENT nucleus is formed having same mass number as sodium,`""_(10)Ne^(22)`is an ISOBAR.

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