Calculate the change in energy involved in the transition of electrons from  n = 4  to n = 2 . Was the energy emitted or absorbed during this transition?   a − 4.008 x 10-19 J, emitted   b 3.048 x 10-19 J, emitted   c − 5.16 x 10-17 J, absorbed   d 4.008 x 10-18 J, absorbed

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A: Answer given as follows

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