Q218 · Practice questionComplex familiar1 mark
QUESTION 218
The diagram shows four bound energy levels of an atom. An electron starts at the lowest level. Which photon energy cannot excite it to one of the other three shown bound levels? Ignore broadening and multiphoton processes.
(A)
(B)
(C)
(D)
WORKED SOLUTION
1 markAnswer A
ANSWER
A.
Worked solution
From the permitted shown excitation energies are , and . An photon would require a level at , which is not shown.
Equivalent physically justified methods and consistent equivalent units accepted.
Displayed decimals are model answers; accept appropriate significant figures and consistent rounding from stated constants.
Select A.
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