Identify covalent and ionic compounds.
Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other
19 Matching Annotations
- Oct 2023
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chem.libretexts.org chem.libretexts.org
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selenium monoxide
SeO
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sulfur hexafluoride
SF6
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dioxygen difluoride
O2F2
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nitrogen dioxide
NO2
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PCl3
covalent
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F2
cobalent
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a(OH)
both
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N2O
The elements in N2O4| are both nonmetals, rather than a metal and a nonmetal. Therefore, the atoms form covalent bonds.
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Na3PO4Na3PO4\ce{Na_3PO_4}
Because sodium is a metal and we recognize the formula for the phosphate ion, we know that this compound is ionic. However, within the polyatomic phosphate ion, the atoms are held together by covalent bonds, so this compound contains both ionic and covalent bonds.
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Na2O
The elements in Na2O are a metal and a nonmetal, which form ionic bonds.
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1-heptyne
HC≡C(CH2)4CH3
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2-hexene
CH3CH=CHCH2CH2CH3
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n-octane
CH3(CH2)6CH3
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disulfur decafluoride
S2F10
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silicon tetrachloride
SiCl4
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OF2
oxygen difluoride
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N2O5
dinitrogen pentoxide
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IF7
Iodine Heptafluoride
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