Periodic Table Trends

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What is the periodic trend for atomic radius across a period?
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The atomic radius generally decreases across a period from left to right.
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How does atomic radius change down a group?
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Atomic radius increases as you move down a group.
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What is ionization energy, and how does it trend across a period?
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Ionization energy generally increases across a period from left to right.
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Describe the trend in ionization energy down a group.
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Ionization energy decreases as you move down a group.
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What trend is observed in electronegativity across a period?
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Electronegativity generally increases across a period from left to right.
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How does electronegativity change down a group?
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Electronegativity decreases as you move down a group.
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What is electron affinity, and how does it trend across a period?
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Electron affinity generally becomes more negative across a period from left to right.
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Describe the change in electron affinity down a group.
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Electron affinity becomes less negative as you move down a group.
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What is the trend for metallic character across a period?
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Metallic character decreases across a period from left to right.
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How does metallic character change down a group?
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Metallic character increases down a group.
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What is the trend in density across the periods of the periodic table?
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Density generally increases up to the middle of the period and then decreases.
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How does reactivity vary for metals down a group?
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Reactivity of metals generally increases down a group.
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Describe the trend for non-metal reactivity down a group.
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Reactivity of non-metals generally decreases down a group.
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What is the periodic trend for atomic number?
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Atomic number increases from left to right across a period and top to bottom down a group.
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How are periods and groups arranged on the periodic table?
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Periods are horizontal rows, and groups are vertical columns on the periodic table.
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