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c2h2 ionic or covalent
c2h4o2 ionic or covalent
c2h5oh ionic or covalent
is c2h4 ionic or covalent
c2h5no2 ionic or covalent
is c2h2 molecular or ionic
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c2h6 ionic or covalent
hc2h3o2 ionic or covalent
c2h6o ionic or covalent
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