3.2

Which element has the lowest electronegativity?

• Carbon

• Fluorine

• Lithium

• Oxygen

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Which element is most similar in behavior to Calcium?

• Chlorine

• Magnesium

• Sodium

• Sulfur

Bromine, atomic number 35, belongs to group 17. How many valence electrons does bromine have in its outermost shell?

• 7

• 17

• 18

• 35

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Which term describes the energy required to remove an electron from an atom?

• Electron affinity

• Electron Energy

• Electronegativity

• Ionization Energy

How does ionization energy change as you move from left to right in Period 4 from Potassium to Iron?

• It does not change.

• It generally increases

• It generally decreases

• It varies unpredictably.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which alkaline earth metal has the highest ionization energy?

• Barium

• Calcium

• Magnesium

• Strontium

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NGSS.HS-PS1-1

How does atomic size (radius) change as you move from left to right in period 3 from Aluminum through Chlorine?

• It does not change.

• It generally increases.

• It generally decreases

• It varies unpredictably.

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NGSS.HS-PS1-1

Which statement is the best reason why the atomic radius increases with atomic number in each group of elements?

• A new octet forms.

• The nuclear charge increases.

• The number of neutrons increases.

• There number of occupied energy levels increases.

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NGSS.HS-PS1-1

Which term describes the ability of an atom in a chemical compound to attract electrons from another atom in the compound?

• Electron Affinity.

• Electronegativity.

• Ionization Potential.

• Electron Configuration.

Which gas is unreactive according to its position in the periodic table?

• Carbon

• Neon

• Oxygen

• Sodium

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