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Standardized Test Preparation . Chapter 4. Preview. Multiple Choice Short Answer Extended Response. Multiple Choice. 1. Which of the following relationships is true? A. Higher-energy light has a higher frequency than lower-energy light does.

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Standardized Test Preparation

Chapter 4

Preview

Multiple Choice

Short Answer

Extended Response


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Multiple Choice

1. Which of the following relationships is true?

A.Higher-energy light has a higher frequency than lower-energy light does.

B.Higher-energy light has a longer wavelength than lower-energy light does.

C.Higher-energy light travels at a faster speed than lower-energy light does.

D.Higher-frequency light travels at a slower speed than lower-energy light does.

Standardized Test Preparation

Chapter 4


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1. Which of the following relationships is true?

A. Higher-energy light has a higher frequency than lower-energy light does.

B.Higher-energy light has a longer wavelength than lower-energy light does.

C.Higher-energy light travels at a faster speed than lower-energy light does.

D.Higher-frequency light travels at a slower speed than lower-energy light does.

Standardized Test Preparation

Chapter 4

Multiple Choice


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2. The energy of a photon is greatest for

A.visible light.

B.ultraviolet light.

C.infrared light.

D.X-ray radiation.

Standardized Test Preparation

Chapter 4

Multiple Choice


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2. The energy of a photon is greatest for

A.visible light.

B.ultraviolet light.

C.infrared light.

D. X-ray radiation.

Standardized Test Preparation

Chapter 4

Multiple Choice


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3. What is the wavelength of radio waves that have a frequency of 88.5 MHz?

A. 3.4 m

B. 8.9 nm

C. 0.30 m

D. 300 nm

Standardized Test Preparation

Chapter 4

Multiple Choice


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3. What is the wavelength of radio waves that have a frequency of 88.5 MHz?

A. 3.4 m

B. 8.9 nm

C. 0.30 m

D. 300 nm

Standardized Test Preparation

Chapter 4

Multiple Choice


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4. Which transition in an excited hydrogen atom will emit the longest wavelength of light?

A. E5 to E1

B. E4 to E1

C. E3 to E1

D. E2 to E1

Standardized Test Preparation

Chapter 4

Multiple Choice


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4. Which transition in an excited hydrogen atom will emit the longest wavelength of light?

A. E5 to E1

B. E4 to E1

C. E3 to E1

D. E2 to E1

Standardized Test Preparation

Chapter 4

Multiple Choice


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5. Which of the following quantum numbers is often designated by the letters s, p, d, and f instead of by numbers?

A. n

B. l

C. m

D. s

Standardized Test Preparation

Chapter 4

Multiple Choice


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5. Which of the following quantum numbers is often designated by the letters s, p, d, and f instead of by numbers?

A. n

B. l

C. m

D. s

Standardized Test Preparation

Chapter 4

Multiple Choice


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6. Which quantum number is related to the shape of an orbital?

A. n

B. l

C. m

D. s

Standardized Test Preparation

Chapter 4

Multiple Choice


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6. Which quantum number is related to the shape of an orbital?

A. n

B. l

C. m

D. s

Standardized Test Preparation

Chapter 4

Multiple Choice


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7. What is the maximum number of unpaired electrons that can be placed in a 3p sublevel?

A. 1

B. 2

C. 3

D. 4

Standardized Test Preparation

Chapter 4

Multiple Choice


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7. What is the maximum number of unpaired electrons that can be placed in a 3p sublevel?

A. 1

B. 2

C. 3

D. 4

Standardized Test Preparation

Chapter 4

Multiple Choice


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8. What is the maximum number of electrons that can occupy a 3s orbital?

A. 1

B. 2

C. 6

D. 10

Standardized Test Preparation

Chapter 4

Multiple Choice


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8. What is the maximum number of electrons that can occupy a 3s orbital?

A. 1

B. 2

C. 6

D. 10

Standardized Test Preparation

Chapter 4

Multiple Choice


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9. Which element has the noble-gas notation [Kr]5s24d2?

A. Se

B. Sr

C. Zr

D. Mo

Standardized Test Preparation

Chapter 4

Multiple Choice


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9. Which element has the noble-gas notation [Kr]5s24d2?

A. Se

B. Sr

C. Zr

D. Mo

Standardized Test Preparation

Chapter 4

Multiple Choice


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10. When a calcium salt is heated in a flame, a photon of light with an energy of 3.2 × 10−19 J is emitted. On the basis of this fact and the table below, what color would be expected for the calcium flame?

Standardized Test Preparation

Chapter 4

Short Answer


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10. When a calcium salt is heated in a flame, a photon of light with an energy of 3.2 × 10−19 J is emitted. What color would be expected for the calcium flame?

Answer:The color will be orange. Converting energy into frequency gives 4.8 × 1014, which corresponds to the frequency of orange light.

Standardized Test Preparation

Chapter 4

Short Answer


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11. The electron configuration of sulfur is 1s22s22p63s23p4. Write the orbital notation for sulfur.

Standardized Test Preparation

Chapter 4

Short Answer


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11. The electron configuration of sulfur is 1s22s22p63s23p4. Write the orbital notation for sulfur.

Answer:

Standardized Test Preparation

Chapter 4

Short Answer

3s

1s

2s

3p

2p


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12. Explain the reason for the hydrogen line-emission spectrum.

Standardized Test Preparation

Chapter 4

Extended Response


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12. Explain the reason for the hydrogen line-emission spectrum.

Answer: Electrons in atoms can occupy orbitals of only specific energies. When an atom is excited, the electron is no longer in the ground state. When the electron returns to a lower energy level, light is emitted. Because only specific energies are allowed, certain wavelengths of light are emitted, giving rise to the individual lines in the spectrum.

Standardized Test Preparation

Chapter 4

Extended Response


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13. When blue light shines on potassium metal in a photocell, electrons are emitted. But when yellow light shines on the metal, no current is observed. Explain.

Standardized Test Preparation

Chapter 4

Extended Response


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13. When blue light shines on potassium metal in a photocell, electrons are emitted. But when yellow light shines on the metal, no current is observed. Explain.

Answer: Photons of blue light are higher energy than photons of yellow light. Electrons can be emitted only when a photon of sufficient energy strikes the surface of the metal. Therefore, the energy of blue light is greater than the threshold energy, but the energy of yellow light is not.

Standardized Test Preparation

Chapter 4

Extended Response


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