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Halogens (Continued)

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mustafa El Ghandour

on 11 November 2014

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Transcript of Halogens (Continued)

Halogen Properties
Halogens exist in all the 3 states of matter.
They can usually be found in Earth's crust.
Astatine is the rarest of the halogens.
They all exist as diatomic molecules (two atoms) when in their pure form.
They are highly reactive and electronegative.
They like to combine with metals to form salts.

Facts about Halogens
Most halogens are poisonous even though they are usually needed by the body.
Fluorine is one of the MOST reactive elements on Earth
Most halogens contain salts.
Facts (2)
"Halogen" in French nomenclature means elements that produce salts when they combine with metals.
They usually form negatively charged atoms since they have a missing valence electron.
Halogens kill bacteria and can sometimes kill organisms if enough quantities are used.
Facts (3)
Halides are halogens when they combine with other elements.
Halides form acids when they combine with hydrogen.
Some halogens are used to make synthetic organic compounds ( plastic polymers, etc).
Halogens (Continued)
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