An emission transition starts from the orbit having radius 1.3225 nm and ends at 211.6 pm. Name the series to which this transition belongs and the region of the spectrum.

Question

Canvas Classes · Accepted Answer

Step 1: Bohr radius formula

nm (for H-atom)

Step 2: Find orbit numbers

Starting orbit:  nm

Ending orbit:  pm  nm

Step 3: Identify series

Transition : this is the Balmer series (ends at ).

Balmer series lies in the visible region of the spectrum.

Final Answer: Balmer, visible → Option (b)

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