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JEE Main Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main

How many atoms or groups among the following exhibit a +I (electron-donating inductive) effect: Zn, –COO⁻, R (alkyl), –S⁻, –I, Be, –SO₃H, –C(Et)₃, –COOH?

Answer: 6

Solution

Electropositive metal substituents (Zn, Be) and anionic/alkyl electron-rich groups (–COO⁻, R, –S⁻, –C(Et)₃) are +I

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Question ID VK-140469