Why does the alkyl group attain a negative charge in a Grignard reagent?

A. Due to the presence of a metal atom in the Grignard reagent
B. Alkyl groups always have a negative charge in Grignard reagents
C. Electrons from the metal-carbon bond are donated to the alkyl group
D. Alkyl groups have a tendency to gain electrons in this reaction

The alkyl group in a Grignard reagent becomes negatively charged due to the donation of electrons from the metal-carbon bond, with magnesium facilitating the electron transfer. Therefore, the correct option is option 3

Explanation:

The alkyl group in a Grignard reagent attains a negative charge due to the donation of electrons from the metal-carbon bond. Specifically, the magnesium atom in the Grignard reagent has a tendency to have a positive oxidation state, which facilitates the electron transfer and makes the alkyl group negatively charged. This electronic configuration allows the alkyl group to be a strong nucleophile, capable of attacking positively charged or electron-deficient atoms, such as carbonyl carbon in aldehydes or ketones.

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