Periodic Trends

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Periodic Table

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A table of the chemical elements arranged in order of atomic number.

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Noble Gases

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Group 18 elements, known for being inert.

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Period

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A horizontal row in the periodic table.

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Electronegativity

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The ability of an atom to attract electrons.

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Reactivity

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How readily a substance undergoes a chemical reaction.

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Periodic Trends

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Patterns in the periodic table, such as electronegativity and atomic radius.

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Oxidation Number

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The charge of an atom if electrons are completely transferred.

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Alkali Metals

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Group 1 elements, highly reactive.

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Alkaline Earth Metals

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Group 2 elements, reactive metals.

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Transition Metals

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Elements in groups 3-12, known for forming colored compounds.