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Ch.8 - The Quantum-Mechanical Model of the Atom
Chapter 8, Problem 44

Calculate the energy of a photon of each frequency and state what part of the electromagnetic spectrum is associated with the frequency.
a. 15.77×1017 Hz
b. 1.18×1014 Hz
c. 3.00×1020 Hz

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insert step 1: Use the formula for the energy of a photon, which is E = h \cdot f, where E is the energy, h is Planck's constant (6.626 \times 10^{-34} \text{ J}\cdot\text{s}), and f is the frequency.
insert step 2: For each frequency given, substitute the value of the frequency into the formula.
insert step 3: Calculate the energy for each frequency using the formula.
insert step 4: Identify the part of the electromagnetic spectrum each frequency corresponds to by comparing the frequency to known ranges for radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
insert step 5: State the energy calculated and the corresponding part of the electromagnetic spectrum for each frequency.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Photon Energy Calculation

The energy of a photon can be calculated using the formula E = hν, where E is the energy, h is Planck's constant (6.626 × 10^-34 J·s), and ν (nu) is the frequency of the photon. This relationship shows that higher frequency photons have greater energy, which is crucial for understanding the behavior of electromagnetic radiation.
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Electromagnetic Spectrum

The electromagnetic spectrum encompasses all types of electromagnetic radiation, arranged by frequency or wavelength. Different regions of the spectrum, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, correspond to specific frequency ranges, influencing their applications and interactions with matter.
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Frequency and Wavelength Relationship

Frequency (ν) and wavelength (λ) are inversely related through the equation c = λν, where c is the speed of light (approximately 3.00 × 10^8 m/s). This relationship indicates that as the frequency of electromagnetic radiation increases, its wavelength decreases, which is essential for identifying the part of the spectrum associated with a given frequency.
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