The Halogens

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The halogens are in group..
7 of the periodic table.
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Being in the 7th group of the periodic table means that..
all of the halogens have similar properties because they all have 7 electrons in their outer shell.
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Examples of halogens at room temperature...
Chlorine is a reactive, poisonous, green gas...... Bromine is a dense, poisonous orange liquid...... Iodine is a dark grey crystalline solid.
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What do halogens react with?
They react with most metals to form SALTS called METAL HALIDES.
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What else can the halogens react with?
They can also react with HYDROGEN to form HYDROGEN HALIDES.
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Hydrogen halides are...
SOLUBLE and they dissolve in WATER to form ACIDIC solutions.
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The higher up group 7 an element is..
the more reactive it is.
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Why is this?
This is because the outer shell is nearer to the nucleus, so the attraction pull from the nucleus is stronger which attracts extra electrons more strongly.
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When halides dissolve in water..
the halide ions are free to react.
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If a more reactive halogen reacts with a solution that already contains halide ions it will..
PUSH OUT the less reactive halogen. This is known as a DISPLACEMENT REACTION.
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Other cards in this set

Card 2

Front

Being in the 7th group of the periodic table means that..

Back

all of the halogens have similar properties because they all have 7 electrons in their outer shell.

Card 3

Front

Examples of halogens at room temperature...

Back

Preview of the front of card 3

Card 4

Front

What do halogens react with?

Back

Preview of the front of card 4

Card 5

Front

What else can the halogens react with?

Back

Preview of the front of card 5
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