Group 7- The Halogens

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  • Created by: Simana
  • Created on: 29-10-15 18:04
What happens as you go down Group 7?
LESS reactive, HIGHER melting point, HIGHER Boiling Point
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Why do the Halogens get less reactive as you move down Group 7?
Because it is harder to gain an extra E, because the outer shell if further away from the nucleus.
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What are Halogens?
Non-metals with coloured vapours
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Properties of Fluorine?
Very reactive, poisionous yellow gas
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Properties of Chlorine?
Fairly reactive, poisionous dense green gas
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Properties of Bromine?
Dense, poisionous, red-brown volatile liquid
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Properties of Iodine?
A dark grey, crystalline solid or a purple vapour
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What do they exist as?
Molecules which ar epairs of atoms.
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What bond do Halogens form with and who?
Ionic Bonds with Metals
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What do halogens form when they bond with metals?
1- ions called halides
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What do more reactive Halogens do with lesss reactive ones?
Displaces them
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How can a more reactive halogen displace a less reactive halogen?
by displacing the less reactive halogen from an aqueous solution of its salt.
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Example of displacement?
Chlorine can displace bromine and iodine from an aqueous solution of its salt (bromide or iodine)
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Other cards in this set

Card 2

Front

Why do the Halogens get less reactive as you move down Group 7?

Back

Because it is harder to gain an extra E, because the outer shell if further away from the nucleus.

Card 3

Front

What are Halogens?

Back

Preview of the front of card 3

Card 4

Front

Properties of Fluorine?

Back

Preview of the front of card 4

Card 5

Front

Properties of Chlorine?

Back

Preview of the front of card 5
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