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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
Halogens(group 17)

By: Nick Nugent and Matt Muzzio

halogens
Halogens
  • Group Name: Halogens
  • Group Number: 17

Electron configuration: np5

F(Fluorine)

I(Iodine)

At(Astatine)

Cl(Chlorine)

Br(Bromine)

slide3

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
chlorine cl
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
bromine br
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
iodine i
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.
astatine at
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