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![Supernova]()
Supernova
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![Davy's Electrolysis Trough]()
Davy's Electrolysis Trough
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Diamond
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![Part of the Periodic Table]()
Part of the Periodic Table
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Dmitri Mendeleev
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Using the Periodic Table
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Spectroscope
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Molecular model
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Atom's Structure
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Iron Ore
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Teeth Braces
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Fireworks
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Swimming Pool
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Magnesium
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![Alloy Wheels]()
Alloy Wheels
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![Sun]()
Sun
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![Electron Transfer]()
Electron Transfer
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Diamonds
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Halogen Elements
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Pressure Readings
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Salt
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Oxygen
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Halogens and Their Uses
Film info
Film summary
Halogens are hazardous to human life, yet they can also be very useful. How do they react when they meet other elements?Key facts
- The halogens are the elements in Group 7 of the periodic table.
- The halogens are non-metals and are very reactive.
- The melting and boiling points of the halogens increase down the group.
- The reactivity of the halogens decreases down the group.
Transcript
The elements in group 7 of the periodic table are called the halogens.
The Halogens
They include fluorine, chlorine, bromine, iodine and astatine.
They're all non-metals and are vigorously reactive.
This is due to their seven outer shell electrons – just one short of a full shell – giving them a strong tendency to …
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