Because they each have 7 electrons in their outer shell. This means when they react each atom gains one electrons to form a negative ion with a stable electronic structure
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How can we predict the properties of halogens knowing the properties of other halogens?
This is because the properties show trends.
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How makes a halogen more reactive?
By the nearer the outer shell is to the nucleus, the easier it is for an atom to gain one electron which makes it more reactive
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What happens when a halogen reacts with an alkali metal?
A metal halide is made
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What are the two possible outcomes if halogens are bubbled through solutions of metal halides?
No reaction or a displacement reaction
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What is increased of the halogen if it is higher up the group?
The reactivity
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What is reduction?
When electrons are gained
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Other cards in this set
Card 2
Front
How can we predict the properties of halogens knowing the properties of other halogens?
Back
This is because the properties show trends.
Card 3
Front
How makes a halogen more reactive?
Back
Card 4
Front
What happens when a halogen reacts with an alkali metal?
Back
Card 5
Front
What are the two possible outcomes if halogens are bubbled through solutions of metal halides?
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