An electron makes a transition from a certain energy level Ek 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
Correct Answer: 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
