Practice Questions 1: Tour of The Periodic Table

What is the valence electron configuration of sodium (Na)?

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DOK Level 1: Recall

Which of the following elements is a main group element?

• Iron (Fe)

• Neon (Ne)

• Uranium (U)

• Silver (Ag)

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DOK Level 1: Recall

• It makes magnesium highly reactive with water.

• It allows magnesium to form stable divalent cations.

• It gives magnesium properties similar to noble gases.

• It makes magnesium a good conductor of heat only.

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DOK Level 2: Skill/Concept

• +1

• -1

• +2

• -2

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DOK Level 2: Skill/Concept

Which property is directly influenced by the valence electron configuration of an element?

• Melting point

• Color

• Radioactivity

• All of the above

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DOK Level 2: Skill/Concept

• Chlorine, -1

• Sulfur, +6

• Argon, 0

• Phosphorus, +5

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DOK Level 3: Strategic Thinking

• It is inert and non-reactive.

• It is highly reactive, especially with alkali metals.

• It is moderately reactive with a preference for covalent bonding.

• It is a noble gas with minimal chemical reactivity.

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DOK Level 3: Strategic Thinking

What trend in atomic radius can be observed across the main group elements from left to right in a period?

• Increases due to increased nuclear charge

• Decreases due to increased nuclear charge

• Remains constant as electron shells do not change

• Increases then decreases due to electron-electron repulsion

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DOK Level 3: Strategic Thinking

• They gain electrons easily to achieve a noble gas configuration.

• They lose electrons easily, forming cations.

• They share electrons, forming covalent bonds.

• They do not interact with other elements.

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DOK Level 3: Strategic Thinking

What element in Period 4 has 5 valence electrons?

• Zr
• As
• V
• Sb