When comparing the size of O atom and O^2- ion which of the following statements is true?

• O^2- ion is smaller than O atom

• The electron-electron repulsion in O^2- ion is higher than O atom

• Two electrons are removed from O atom to form O^2- ion.

• O^2- ion has more protons than O atom

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When comparing the size of Li atom and Li⁺ ion which of the following statements is false?

• Li⁺ ion is smaller than Li atom

• One electron is removed from Li atom to form Li⁺ ion.

• The electron-electron repulsion in Li⁺ ion is higher than in Li atoms.

• Li atom and Li⁺ ion have the same number of protons.

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As you look from left to right across a period, ionic radius

• increases

• decreases

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As you look down a group, ionic radius

• increases

• decreases

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Which of these has the greatest ionic radius?

• potassium

• aluminum

• carbon

• oxygen

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Which of these has the larger atomic radius?

• B

• Al

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Which of these has the larger atomic radius?

• Na

• Al

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Which of these has the larger atomic radius?

• O

• S

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Which of these has the larger atomic radius?

• O

• F

Which of these has the larger atomic radius?

• Cl

• Br

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