1 / 10

Mixed Groups

Mixed Groups. Properties of Metalloids . Metalloids – form ionic and covalent bonds with other elements and can have metallic and nonmetallic properties Metalloids will generally conduct electricity better than nonmetals but not as good as metals – giving them the name semiconductor

monifa
Download Presentation

Mixed Groups

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mixed Groups

  2. Properties of Metalloids • Metalloids – form ionic and covalent bonds with other elements and can have metallic and nonmetallic properties • Metalloids will generally conduct electricity better than nonmetals but not as good as metals – giving them the name semiconductor • Metalloids are found along the stair-step line (exception of aluminum) – found in groups 13, 14, 15, 16, and 17

  3. Boron group • Group 13 • Has 3 valence electrons (valence electrons – the electrons in the outermost shell of the atom) • Important element • Aluminum – most abundant metal in Earth’s crust • Strong and light – used in construction of airplanes

  4. Carbon Group • Group 14 • 4 valence electrons • Important elements • All organic compounds contain Carbon but not all carbon compounds are organic • Silicon – second most abundant element found in Earth’s crust (most found as sand SiO2)

  5. Allotropes • Allotropes – are different forms of the same element having different molecular structures

  6. The Nitrogen Group • Group 15 • 5 valence electrons • Each breath you take is about 80 percent gaseous nitrogen.

  7. The Oxygen Group • Group 16 • Oxygen makes up about 21% of air… exists as a diatomic molecule (diatomic molecule – a molecule that consists of two atoms of the same element) – O2

  8. Synthetic Elements • Elements scientists have made by smashing existing elements with particles.

  9. Classwork/Homework • Page 596-597 • Write and answer questions 1-15

More Related