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Author Topic: Covalent compounds  (Read 329 times)
Gee
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« on: November 04, 2009, 11:14:49 PM »
Which one of the following compounds is covalent?
NaF
Cu(CH3CO2)2
HBr
NH4H2PO4
TiO2

Is it HBr ?
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kingchemist
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« Reply #1 on: November 05, 2009, 04:33:25 AM »
Yes, provided HBr is a gas (in aqueous solution it is ionic)

All the others are ionic salts/compounds. Generally if a compound contains a metal it will be ionic - so a, b and e (lettering downwards) are ionic. Ammonium is also an ion, NH4+, so its compounds are ionic.

HBr contains only non-metal atoms and such compounds are usually covalent
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