Quantum Chemistry

What is the photoelectric effect?

• Electrons are emitted from metals when they are illuminated by electromagnetic radiation of required frequency.

• Energy can neither be created nor destroyed.

• Emission of light when an electron moves from a higher-energy level to the lower-energy level.

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NGSS.HS-PS4-3

Which quantum number determines the energy of an electron in a hydrogen atom?

• Principle quantum number (n)

• Angular momentum quantum number (l)

• Magnetic quantum number (m_l)

• Spin quantum number (m_s)

Which quantum number describes the shape of an atomic orbital?

• n

• m_l

• m_s

• l

• 8.90 × 10^-1

• 3.00 × 10^-19

• 1.94 × 10^-18

• -3.00 × 10^-19

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NGSS.HS-PS4-3

What is the value of the angular momentum quantum number (l) for each of these atomic orbitals?

 

s, p, d, f

• 0, 2, 1, 3

• 3, 2, 0, 1

• 3, 0, 1, 2

• 0, 1, 2, 3

An electron cannot have the quantum numbers n = ________, l = ________, ml = ________.

• 1, 1, 1

• 2, 0, 0

• 3, 1, -1

• 2, 1, -1

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NGSS.HS-PS4-1

Which of the following transitions occurs when a photon is absorbed?

• n = 2 → n = 1

• n = 1 → n = 2

• n =3 → n = 1

• n = 6 → n = 3

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

Which of the following transitions results in emission of the highest-energy photons?

• n = 6 → n = 3

• n =3 → n = 1

• n = 1 → n = 6

• n = 6 → n = 1

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NGSS.HS-PS4-1

Which of the following transitions results in the absorption of the highest-energy photons?

• n = 6 → n = 3

• n =3 → n = 6

• n = 1 → n = 6

• n = 6 → n = 1

Tags

NGSS.HS-PS4-4