Assume the following transitions in the normal electronic emission spectrum: a) from 2S to 1S b) from 2p to 1s c) from 3d to 2p of an atom are described accordingly as   all a, b and c are forbidden transitions   only a and c transitions are allowed   all a, b, and c are allowed transitions   only b and c transitions are allowed   only a and b transitions are allowed

Q: 2626 nm

A: Answer

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A: The correct option is as follows:

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