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In the hydrogen atom spectrum, lambda(3-...

In the hydrogen atom spectrum, `lambda_(3-1) and lambda_(2-1)` represent wavelengths emitted due to transition from second and first excited states to the ground state respectively . The ratio `(lambda_(3-1))/(lambda_(2-1))=(p)/(q)`, where p and q are the smallest positive integers . What is the value of ( p + q ) ?

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