Periodic Trends

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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As you move left to right across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have more energy levels, greater nuclear charge

• the atoms have more protons, greater nuclear charge

• the atoms have less electrons, greater nuclear charge

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Which atom has the largest atomic radius?

• potassium less energy levels

• rubidium more energy levels

• cesium more protons

• cesium more energy levels

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In the alkali metals, which element has a larger atomic radius?

• lithium, Li

• sodium, Na

• potassium, K

• cesium, Cs

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Which noble gas has the largest radius?

• Barium

• Cesium

• Barium

• Rn

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

• Helium (He)
• Hydrogen

• Calcium (Ca)
• Magnesium (Mg)

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Which set of elements would have the most similar properties?

• 3 elements in the same period

• 3 elements in the same group

• 3 elements in different periods and different groups

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Which accepts electrons the easiest?

• bromine

• He
• cesium

• sodium

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Which gives up electrons the easiest?

• C
• lithium

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Which has the greater EN: 
H or F?

• H
• F

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