Question

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what are geometric isomers? compounds that have the same number of carbon atoms arranged in different orders compounds that have the same atoms arranged in the same order, and have the same three - dimensional orientations compounds that have the same types of atoms arranged in different orders compounds that have the same atoms arranged in the same order, but with different three - dimensional orientations

Explanation:

Geometric isomers (also called cis - trans isomers or E - Z isomers) are compounds with the same atoms arranged in the same order (same connectivity) but with different three - dimensional orientations. Let's analyze the options:

• Option 1: "compounds that have the same number of carbon atoms arranged in different orders" describes structural isomers (constitutional isomers) where the connectivity of atoms is different, not geometric isomers.
• Option 2: "compounds that have the same types of atoms arranged in different orders" also refers to structural isomers as the order (connectivity) of atoms is different.
• Option 3: "compounds that have the same atoms arranged in the same order, and have the same three - dimensional orientations" does not match the definition of geometric isomers since geometric isomers have different three - dimensional orientations.
• Option 4: "compounds that have the same atoms arranged in the same order, but with different three - dimensional orientations" matches the definition of geometric isomers.

Answer:

compounds that have the same atoms arranged in the same order, but with different three - dimensional orientations