UNIT 1&2 Review

Write the ground-state electron configuration for Argon (Ar).

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁴

• 1s² 2s² 2p⁶ 3s² 3p²

• 1s² 2s² 2p⁶ 3s² 3p⁵

Write the Noble Gas Short-Hand Configuration for Cadmium (Cd).

• [Kr] 4d¹⁰ 5s²

• [Xe] 4f¹⁴ 5d¹⁰ 6s²

• [Kr] 5s² 4d¹⁰

• [Xe] 5s² 4d¹⁰

Which letter shows the correct Lewis Dot Structure for Nitrogen (N)?

• N with 5 dots

• N with 3 dots

• N with 7 dots

• N with 6 dots

Which letter shows the correct Lewis Dot Structure for Gallium (Ga)?

• Ga with 3 dots

• Ga with 1 dot

• Ga with 5 dots

• Ga with 2 dots

Which letter shows the correct Lewis Dot Structure for Neon (Ne)?

• Ne with 8 dots

• Ne with 6 dots

• Ne with 4 dots

• Ne with 2 dots

What is most of the periodic table made of?

• Metals

• Nonmetals

• Metalloids

• Noble gases

What group and period is Sodium (Na) it in?

• Group 1, Period 3

• Group 2, Period 4

• Group 1, Period 2

• Group 3, Period 3

What group and period is Neon in?

• Group 18, Period 2

• Group 17, Period 3

• Group 18, Period 3

• Group 17, Period 2

Where are the halogens on the periodic table? What are the characteristics?

• Group 17, highly reactive nonmetals

• Group 18, inert gases

• Group 1, reactive metals

• Group 2, alkaline earth metals

What are valence electrons? How can you find valence electrons?

• Electrons in the outermost shell, determined by group number

• Protons in the nucleus, determined by atomic number

• Neutrons in the nucleus, determined by mass number

• Electrons in the innermost shell, determined by period number