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The oxides, hydrides, and halides are volatile covalent compounds that have low melting points.
The halides all contain halogen elements, such as chlorine and fluorine.
In elimination reactions, larger molecules expel smaller molecules like water, hydrogen halides , carbon dioxide and other diatomic gases to form new substances.
In covalent halides , such as carbon tetrachloride, the bonding electrons are localized in the carbon-chlorine bonds of the individual molecules.
The chemical elements are grouped into sets in the periodic table (such as halides and alkali metals) based on the chemical behavior they have in common.
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