1.

The transition of electron from energy level W1 to W2 is associated with emission or absorption of electro magnetic radiation of frequency f such that

A. hf = |W1 - W2|
B. |W1 - W2|f = h
C. hf = 0.5|W1 - W2|
D. (hf)2 = |W1 - W2|
Answer» B. |W1 - W2|f = h


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