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#### Question

Write symbolically the process expressing the β^{+} decay of `""_11^22Na`. Also write the basic nuclear process underlying this decay.

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State the law of radioactive decay. Hence derive the expression N = N_{o}e^{-λt }where symbols have their usual meanings.

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(a) Write the basic nuclear process involved in the emission of β^{+} in a symbolic form, by a radioactive nucleus.

(b) In the reactions given below:

(i)`""_16^11C->_y^zB+x+v`

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