Overview of Periodic Table

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What is the Periodic Table?

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A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

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What are Alkali Metals?

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Elements in Group 1 of the Periodic Table, known for being highly reactive and having one electron in their outermost shell.

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What are Alkaline Earth Metals?

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Elements in Group 2 of the Periodic Table, characterized by having two electrons in their outermost shell and being less reactive than alkali metals.

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What are Halogens?

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Elements in Group 17 of the Periodic Table, known for being highly reactive nonmetals and having seven electrons in their outermost shell.

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What are Noble Gases?

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Elements in Group 18 of the Periodic Table, known for their lack of reactivity due to having a full outer electron shell.

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What is a Metalloid?

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Elements that have properties that are a mixture of metals and non-metals, often found along the zig-zag line on the Periodic Table.

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What is the significance of the atomic number?

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The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.

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What is the difference between metals and non-metals?

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Metals are typically shiny, malleable, and good conductors of heat and electricity, while non-metals are usually dull, brittle, and poor conductors.

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What are Transition Metals?

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Elements found in Groups 3-12 of the Periodic Table, known for their ability to form various oxidation states and colored compounds.

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What is an isotope?

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Atoms of the same element that have the same number of protons but different numbers of neutrons.