Question

Hydrogen’s emission spectrum includes a line of violet light that has a frequency of 7.31 x 1014 Hz. What is the energy (in joules) a photon of the violet light?

Select one:
a. 4.85 x 1019 J
b. 1.10 x 10-48 J
c. 9.06 x 10-49 J
d. 4.84 x 10-19 J

Answer 1

Option D. 4.85×10¯¹⁹ J

Step-by-step explanation:

From the question given above, the following data were obtained:

Frequency (f) = 7.31×10¹⁴ Hz.

Energy (E) =?

The energy of the photon of violet light can be obtained by using the following formula

E = hf

Where:

E is the energy.

h is the Planck's constant

F is the frequency.

Frequency (f) = 7.31×10¹⁴ Hz.

Planck's constant (h) = 6.63×10¯³⁴ Js

Energy (E) =..?

E = hf

E = 6.63×10¯³⁴ × 7.31×10¹⁴ Hz.

E = 4.85×10¯¹⁹ J

Therefore, the energy of the photon of the violent light is 4.85×10¯¹⁹ J