Unit 4 Review Light and Electrons

Name the element- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵

• Manganese

• Magnesium

• Aluminum

• Boron

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In what family is this element found?

1s²2s²2p⁶3s²3p⁶4s²

• alkaline earth metal

• alkali metal

• noble gas

• halogen

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Which of these represents a transition element?

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹

• 1s² 2s¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹

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Which "rule" explains why the two electrons in an orbital have opposite spin?

• Pauli Exclusion Principle

• Hund's Rule

• Heisenberg Uncertainty Principle

• Bohr's Rule

How many valence electrons are in an atom of zinc?

• 2

• 10

• 12

• 8

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Which of these has the shortest wavelength?

• infrared

• yellow light

• microwaves

• blue light

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Which does NOT have the same number of electrons as the others?

• S^2-

• Ar

• K⁺

• Mg²⁺

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What is the predicted electron configuration of Fe³⁺?

• [Ar] 4s² 3d³

• [Ar] 4s¹ 3d⁴

• [Ar] 3d⁶

• [Ar] 3d³

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Emission spectra (bright line spectra) are created when electrons move from ___.

• higher to lower energy levels.

• lower to higher energy levels.

• s orbitals to p orbitals.

• one atom to a different atom.

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Which scientist is credited with the discovery of atomic energy levels?

• Bohr

• Thomson

• Rutherford

• Bunsen