An electron makes a transition from a certain energy level Ek to the ground state...

JAMB 2003

An electron makes a transition from a certain energy level E_k to the ground state E₀. If the frequency of emission is 8.0 x 10¹⁴Hz The energy emitted is

A. 8.25 x 10^-19J
B. 5.28 x 10^-19J
C. 5.28 x 10¹⁹J
D. 8.25 x 10¹⁹J

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Correct Answer: Option B

Explanation

Atomic emission and absorption of energy is usually in packets referred to as photon or quantum of energy of magnitude E =hf, where f is the frequency and h is the plancks constant

Energy emitted = hf

= 6.6 x 10^-34 x 8.0 x 10^-14
= 5.28 x 10^-19J

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