APC U05 Review: Atomic Structure

Which shows an impossible electron configuration?

• 1s² 2s²2p⁶ 3s²3p⁶

• 1s² 2s²2p⁶2d¹⁰ 3s²3p⁶

• 1s² 2s²2p⁶ 3s²3p⁶3d⁵

• 1s² 2s²2p⁶ 3s²3p⁶3d³ 4s²

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following conclusions can be drawn from J. J. Thomson’s cathode ray experiments?

• Atoms contain electrons.

• Practically all the mass of an atom is contained in its nucleus.

• Atoms contain protons, neutrons, and electrons.

• Atoms have a positively charged nucleus surrounded by an electron cloud.

Which of the following Indicates that an atomic orbital can hold no more than two electrons?

• Heisenberg Uncertainty Principle

• Pauli Exclusion Principle

• Hund’s Rule

• Shielding Effect

Which of the following predicts that it is impossible to determine simultaneously the exact position and the exact velocity of an electron?

• Heisenberg Uncertainty Principle

• Pauli Exclusion Principle

• Hund’s Rule

• Shielding Effect

How many peaks would be expected on the photoelectron spectrograph for titanium?

• 3

• 4

• 7

• 8

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NGSS.HS-PS1-1

Which of the following describes the Lyman emission series?

• n_min = 4 , infrared

• n_min = 3 , infrared

• n_min = 2 , visible

• n_min = 1 , ultraviolet

The photoelectric effect only occurs if the light shining on the metal is:

• coherent.
• above a minimum intensity.
• above a minimum frequency.
• above a minimum wavelength.

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

"Electrons will occupy atomic orbitals of lowest energy first."

This statement is known as

• Hund’s rule.

• the Pauli exclusion principle.

• the Heisenberg uncertainty principle.

• the aufbau principle.

In which sequence are the regions of the electromagnetic spectrum arranged in increasing energy per photon?

(Google an E.M. spectrum if you need to.)

• radio waves, infrared, violet, microwaves, x-rays

• infrared, orange, indigo, green, ultraviolet

• gamma rays, x-rays, ultraviolet, red, microwaves

• microwaves, infrared, orange, violet, gamma rays

According the the aufbau principle, which sublevel of orbitals is filled after the 4d sublevel?

• 5s

• 6s

• 6p

• 5p