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ATOMIC STRUCTURE
Question #25475
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Question
What is the threshold frequency of radiation for caesium atom if its work function is 1.9 eV?
A. 3.12 × 10^14 Hz
B. 4.59 × 10^14 Hz
C. 5.75 × 10^14 Hz
D. 6.91 × 10^14 Hz
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