APC Unit 1.1 The Nature of Matter

A particle of light is called a...

• Photoelectron

• Photon

• Proton

• Electron

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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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This image is an illustration of

• photoelectric effect
• Dalton's atomic theory
• Bohr model
• Quantum mechanical model

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What color of light has the greatest energy per photon?

• Red

• Green

• Blue

• Violet

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How many quantum numbers are needed to describe the energy state of an electron in an atom?

• 1
• 2
• 3
• 4

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

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How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The angular momentum quantum number indicates the

• orientation an orbital around the nucleus.
• shape of an orbital.
• direction of the spin of the electron in its orbital.
• main energy level of an orbital.

The set of orbitals that are dumbbell shaped and directed along the x, y, and z axes are called 

• d orbitals.
• p orbitals.
• f orbitals.
• s orbitals

Which orbitals cannot exist

• 3p

• 4d

• 3f

• 6s