periodic trends

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12 Terms

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Atomic Radius - Down a group

Increases

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Atomic Radius - Across a period

L —> R decreases

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Atomic Radius Def

Half the distance between 2 neighboring nuclei

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Ionization Energy Def

Energy required to remove an electron from a gaseous atom

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Ionization Energy - Down a group

decreases

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Ionization Energy - Across period

Increases

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Electronegativity Def

Ability of an atom to attract electrons of itself when bonded

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Electronegativity - Down a group

Decreases

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Electronegativity - Across a period

Increases

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Electroneg extra info

He, Na, Ar (1s^1, 2p^6) have no electronegativity

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Anions (-)

Bigger than the neutral atom

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Cation (+)

Smaller than the neutral atom