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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The group of elements in Group 1 of the Periodic Table, highly reactive, especially with water, and include lithium, sodium, potassium, rubidium, cesium, and francium.

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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 variable oxidation states and colored compounds.

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What are Alkaline Earth Metals?

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The group of elements in Group 2 of the Periodic Table, less reactive than alkali metals, including beryllium, magnesium, calcium, strontium, barium, and radium.

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What are Halogens?

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Elements in Group 17 of the Periodic Table, known for their reactivity and tendency to form salts when combined with alkali metals.

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What are Metalloids?

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Elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the Periodic Table.

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What is Reactivity in Chemistry?

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The tendency of a substance to undergo a chemical reaction, either by itself or with other materials.

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What is a Chemical Compound?

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A substance formed when two or more elements chemically bond together, such as sodium chloride (table salt).

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What is the significance of Atomic Number?

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The number of protons in the nucleus of an atom, which determines the element's identity and its position on the Periodic Table.

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What is an Ion?

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An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.