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is cf polar or nonpolar
is c c polar or nonpolar
is co polar or nonpolar or ionic
is co polar or nonpolar covalent bond
c-f polar or nonpolar or ionic
is c and n polar or nonpolar
is c-f bond polar or nonpolar
f and f polar or nonpolar
is f-cl polar or nonpolar
cl and f polar or nonpolar
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