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Halogens (group 17 )

Halogens (group 17 ). By: Nick Nugent and Matt Muzzio. Halogens. Group Name: Halogens Group Number: 17. Electron configuration: np 5. F(Fluorine ). I(Iodine) At(Astatine). Cl (Chlorine) Br(Bromine). Fluorine(F). Physical Properties: Melting point is 219.6 degrees Celsius

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Halogens (group 17 )

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  1. Halogens(group 17) By: Nick Nugent and Matt Muzzio

  2. Halogens • Group Name: Halogens • Group Number: 17 Electron configuration: np5 F(Fluorine) I(Iodine) At(Astatine) Cl(Chlorine) Br(Bromine)

  3. Fluorine(F) • Physical Properties: • Melting point is 219.6 degrees Celsius • Boiling Point is -188.12 degrees Celsius • Pale, yellow gas • Doesn’t conduct electricity, poor insulator • Chemical Properties: • The most reactive element in the universe • Reactive in almost every circumstance, but it doesn’t react with the Noble Gases • -Only found in nature as compounds • -It is used in toothpaste, used in refrigerants, and is to use to make Teflon plastic

  4. Chlorine(Cl) • Physical Properties: • Melting Point -101 degrees Celsius • Boiling Point -34 degrees Celsius • Green yellow gas • Heavier than air, doesn’t float • Doesn’t conduct electricity, poor insulator • Chemical Properties: • Very reactive, reacts with almost all elements, except noble gases • Very vigorous reactions • Reacts explosively with hydrogen • Forms hydrochloric acid when mixed with water • - Only occurs as compounds in nature • -Added to water and pools as a disinfectant, and is used to make PVC plastic

  5. Bromine(Br) • Physical Properties: • One of two elements that are liquids at room temperature • Freezing Point -7.3 degrees Celsius • Boiling Point 58.8 degrees Celsius • Dark red-brown liquid which forms a red-brown vapor • Bromine only conducts electricity when bonded with another element, but is a good insulator • Chemical Properties: • Very reactive but less reactive than fluorine and chlorine • It reacts explosively with potassium • Even reacts with platinum and palladium • -It’s elemental form isn’t found in nature, Most common compound NaBr • -Used to manufacture fire retardants, pesticides, and components of photographic film

  6. Iodine(I) • Physical Properties: • Nonmetallic, nearly black solid • Melting Point (K): 386.7 • Boiling Point (K): 457.5 • Some isotopes radioactive • Iodine is not a good conductor, nor is it a good insulator • Chemical Properties: • Very reactive but less than fluorine, chlorine, and bromine • Reactive under most circumstances • -Only occurs as compounds in nature • - Required in small amounts by humans for nutrition. It was once used as an antiseptic. Also used in dyes and photography.

  7. Astatine(At) • Physical Properties: • The properties of Astatine are mostly unknown • Melting point of 302°C • Properties like iodine, though Astatine has more metallic properties • Chemical Properties: • The only chemical properties are assumptions that it may have similar properties as the other halogens • -Due to the extreme rarity and short half life of the element, barely any experiments with the element have been conducted • -There are no known uses for the element, but it is a possible cure to thyroid cancer • -It is one of the rarest elements in the universe

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