1
2026 PORTAGE LEARNING CHEM 103 GENERAL
CHEMISTRY I MODULE 2 & FINAL EXAM COMPREHENSIVE
CERTIFICATION EXAMINATION – 200 ADVANCED
QUESTIONS WITH RATIONALES
COMPETENCY DOMAINS
• Electromagnetic Radiation & Wave-Particle Duality
• Photon Energy & the Planck Relationship
• Quantized Energy & Electron Transitions
• Bohr Model & Hydrogen Emission Spectra
• Quantum Numbers & Atomic Orbitals
• Electron Configuration & the Aufbau Principle
• Pauli Exclusion Principle & Hund's Rule
• Periodic Trends & Valence Electron Behavior
INTRODUCTION
This comprehensive examination is designed to assess the knowledge, skills, and competency of
candidates preparing for the Portage Learning CHEM 103 Module 2 and Final Examination.
The assessment evaluates essential competencies across core domains through multiple-choice
and scenario-based questions. Candidates must demonstrate critical thinking, analytical skills,
and quantitative reasoning abilities required to apply atomic structure, quantum mechanics,
and periodic property concepts effectively in professional and academic practice. The
,2
examination is aligned with the 2026 updated content standards for General Chemistry I and
emphasizes calculation-based and conceptual problem-solving.
1. A photon of electromagnetic radiation has a wavelength of 425 nm. What is the
frequency of this radiation? (c = 3.00 × 10⁸ m/s)
A. 7.06 × 10¹⁴ s⁻¹
B. 1.42 × 10¹⁵ s⁻¹
C. 4.25 × 10¹⁴ s⁻¹
D. 1.28 × 10⁶ s⁻¹
☑ Correct Answer: A
☑ Explanation: ν = c/λ = (3.00 × 10⁸ m/s)/(425 × 10⁻⁹ m) = 7.06 × 10¹⁴ s⁻¹. Option B
inverts the calculation incorrectly. Option C confuses the wavelength value with the
frequency. Option D omits the proper exponent conversion from nanometers to meters.
2. Which statement correctly describes the relationship between wavelength and
frequency for electromagnetic radiation in a vacuum?
A. They are directly proportional.
,3
B. They are inversely proportional.
C. They are always numerically identical.
D. Frequency increases as wavelength increases.
☑ Correct Answer: B
☑ Explanation: Because the speed of light (c) is constant in a vacuum, c = λν means
that wavelength and frequency are inversely proportional; as one increases, the other
decreases. Options A and D describe a direct relationship, which is incorrect. Option C is
false because wavelength and frequency have different units and values.
3. A medical imaging technician uses X-rays with a frequency of 3.0 × 10¹⁸ Hz. What is the
energy of a single photon of this radiation? (h = 6.626 × 10⁻³⁴ J·s)
A. 1.99 × 10⁻¹⁵ J
B. 2.21 × 10⁻¹⁶ J
C. 3.31 × 10⁻¹⁵ J
D. 6.63 × 10⁻³⁴ J
☑ Correct Answer: A
, 4
☑ Explanation: E = hν = (6.626 × 10⁻³⁴ J·s)(3.0 × 10¹⁸ s⁻¹) = 1.99 × 10⁻¹⁵ J. Option B
incorrectly divides instead of multiplying. Option C uses an erroneous frequency. Option
D repeats Planck's constant without multiplying by frequency.
4. Which color of visible light has the highest energy per photon?
A. Red
B. Green
C. Violet
D. Yellow
☑ Correct Answer: C
☑ Explanation: Energy is directly proportional to frequency (E = hν), and violet light
has the highest frequency (shortest wavelength) in the visible spectrum, giving it the
highest energy per photon. Red has the lowest frequency and lowest energy. Green and
yellow are intermediate.
2026 PORTAGE LEARNING CHEM 103 GENERAL
CHEMISTRY I MODULE 2 & FINAL EXAM COMPREHENSIVE
CERTIFICATION EXAMINATION – 200 ADVANCED
QUESTIONS WITH RATIONALES
COMPETENCY DOMAINS
• Electromagnetic Radiation & Wave-Particle Duality
• Photon Energy & the Planck Relationship
• Quantized Energy & Electron Transitions
• Bohr Model & Hydrogen Emission Spectra
• Quantum Numbers & Atomic Orbitals
• Electron Configuration & the Aufbau Principle
• Pauli Exclusion Principle & Hund's Rule
• Periodic Trends & Valence Electron Behavior
INTRODUCTION
This comprehensive examination is designed to assess the knowledge, skills, and competency of
candidates preparing for the Portage Learning CHEM 103 Module 2 and Final Examination.
The assessment evaluates essential competencies across core domains through multiple-choice
and scenario-based questions. Candidates must demonstrate critical thinking, analytical skills,
and quantitative reasoning abilities required to apply atomic structure, quantum mechanics,
and periodic property concepts effectively in professional and academic practice. The
,2
examination is aligned with the 2026 updated content standards for General Chemistry I and
emphasizes calculation-based and conceptual problem-solving.
1. A photon of electromagnetic radiation has a wavelength of 425 nm. What is the
frequency of this radiation? (c = 3.00 × 10⁸ m/s)
A. 7.06 × 10¹⁴ s⁻¹
B. 1.42 × 10¹⁵ s⁻¹
C. 4.25 × 10¹⁴ s⁻¹
D. 1.28 × 10⁶ s⁻¹
☑ Correct Answer: A
☑ Explanation: ν = c/λ = (3.00 × 10⁸ m/s)/(425 × 10⁻⁹ m) = 7.06 × 10¹⁴ s⁻¹. Option B
inverts the calculation incorrectly. Option C confuses the wavelength value with the
frequency. Option D omits the proper exponent conversion from nanometers to meters.
2. Which statement correctly describes the relationship between wavelength and
frequency for electromagnetic radiation in a vacuum?
A. They are directly proportional.
,3
B. They are inversely proportional.
C. They are always numerically identical.
D. Frequency increases as wavelength increases.
☑ Correct Answer: B
☑ Explanation: Because the speed of light (c) is constant in a vacuum, c = λν means
that wavelength and frequency are inversely proportional; as one increases, the other
decreases. Options A and D describe a direct relationship, which is incorrect. Option C is
false because wavelength and frequency have different units and values.
3. A medical imaging technician uses X-rays with a frequency of 3.0 × 10¹⁸ Hz. What is the
energy of a single photon of this radiation? (h = 6.626 × 10⁻³⁴ J·s)
A. 1.99 × 10⁻¹⁵ J
B. 2.21 × 10⁻¹⁶ J
C. 3.31 × 10⁻¹⁵ J
D. 6.63 × 10⁻³⁴ J
☑ Correct Answer: A
, 4
☑ Explanation: E = hν = (6.626 × 10⁻³⁴ J·s)(3.0 × 10¹⁸ s⁻¹) = 1.99 × 10⁻¹⁵ J. Option B
incorrectly divides instead of multiplying. Option C uses an erroneous frequency. Option
D repeats Planck's constant without multiplying by frequency.
4. Which color of visible light has the highest energy per photon?
A. Red
B. Green
C. Violet
D. Yellow
☑ Correct Answer: C
☑ Explanation: Energy is directly proportional to frequency (E = hν), and violet light
has the highest frequency (shortest wavelength) in the visible spectrum, giving it the
highest energy per photon. Red has the lowest frequency and lowest energy. Green and
yellow are intermediate.
