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Group 13 Elements: The Boron Group

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Exploring the boron group, or Group 13, of the Periodic Table reveals a fascinating array of elements including boron, aluminum, gallium, indium, thallium, and nihonium. These elements possess three valence electrons leading to a common +3 oxidation state, with thallium also showing a +1 state. Their diverse physical properties and reactivity allow them to form various compounds such as oxides, nitrides, and halides, showcasing their significance in chemistry.

Exploring the Boron Group (Group 13) of the Periodic Table

Group 13, commonly referred to as the boron group, is a family of elements in the Periodic Table that includes boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and the synthetic element nihonium (Nh). Boron stands out as a metalloid with unique properties, while the remaining elements are classified as metals. These elements are found in the p-block and exhibit a general electron configuration ending in ns2np1, which indicates the presence of three valence electrons. These electrons are crucial for the chemical bonding and reactivity of the elements in this group.
Laboratory with beakers and flasks containing colored liquids of Group 13 compounds, blurred equipment in the background.

Diverse Physical Properties of Group 13 Elements

The physical properties of the boron group elements are diverse, with boron being a hard, black, or brown crystalline substance, distinct from the other metallic members that display a silvery appearance. Boron is a poor electrical conductor at room temperature, becoming a better conductor at higher temperatures, while the metals are generally good conductors of electricity. The group exhibits a trend of increasing atomic radius and decreasing melting and boiling points down the group, with the exception of gallium, which has a lower atomic radius than aluminum due to the d-electron contraction effect.

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Group 13 elements

Boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), nihonium (Nh).

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Group 13 common electron configuration

General ending ns2np1, indicating three valence electrons.

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Group 13 position in Periodic Table

Located in the p-block, consisting of metalloid (boron) and metals.

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