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Alkanes do not have geometric isomers because the carbon atoms in their carbon-carbon bonds are _____.

User Raj Jagani
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Answer:

Are free to rotate

Step-by-step explanation:

User Gennie
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The word that best fits the underlined in the sentence is "free-to-rotate." The carbon atoms in their carbon bonds are free to rotate since alkanes do not have geometric isomers. They only have single bonds and the most common example of which are trans molecules. 
User Bui Quang Huy
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