Chemistry Midterm Review

On the periodic table, Groups are

• Horizontal rows

• Vertical columns

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On the periodic table, Periods are

• Horizontal rows

• Vertical columns

What is a valence electron?

• Electrons in the first energy shell

• Electrons in the second energy shell

• Electrons in the outer shell

• Total number of electrons

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Which element is this?

• Nickel

• Neon

• Sodium

• Nitrogen

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What is the atomic number of this atom?

• 2

• 4

• 6

• 8

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What is the mass number of this atom?

• 1

• 3

• 4

• 7

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How many valence electrons?

• 2

• 4

• 6

• 8

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What group does this element belong to?

• 1

• 2

• 17

• 18

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What atom matches this electron configuration?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc

• Copper

• Nickel

• Germanium

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What is the noble gas electron configuration for sulfur?

• [Ar] 3p⁴

• [He] 3s²3p⁴

• [Ne] 3s²3p⁴

• [Na] 3s²3p⁴

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