Chapter 7

Ionization energy is the...

• energy needed to remove the outermost electron.
• ability of an atom to attract electrons from another atom.

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Electronegativity is the...

• energy needed to remove the outermost electron.
• ability of an atom to attract electrons from another atom.

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NGSS.HS-PS1-2

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)
• Titanium (Ti)
• Calcium (Ca)
• Magnesium (Mg)

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Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

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As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

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The element with the largest electronegativity in the halogens is - 

• At
• F
• Cl
• Br

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Which element in Period 2 has the greatest atomic radius?

• Be

• C

• Na

• Li

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Of the halogens, which has the smallest electronegativity?

• F

• Cl

• At

• Ne

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Which alkali metal is the least reactive?

• Li

• Na

• H

• Fr

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Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵
• 1s² 2s² 2p⁶ 3s² 3p⁶
• 1s² 2s² 2p⁶ 3s² 3p⁷

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NGSS.HS-PS1-1