Which of the following are organometallic com | vedclass

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(D) Organometallic compounds are those in which there is at least one direct metal-carbon bond.$(I)$ Grignard reagent $(R-Mg-X)$ contains a $C-Mg$ bon

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$I, II, IV$

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(D) Organometallic compounds are those in which there is at least one direct metal-carbon bond.$(I)$ Grignard reagent $(R-Mg-X)$ contains a $C-Mg$ bond,so it is an organometallic compound.$(II)$ Trimethylboron $((CH_3)_3B)$ contains a $C-B$ bond. Since boron is a metalloid,its organic derivatives are generally classified as organometallic compounds,so it is an organometallic compound.$(III)$ Sodium methoxide $(CH_3ONa)$ contains a $C-O-Na$ bond. There is no direct $C-Na$ bond,so it is not an organometallic compound.$(IV)$ $TEL$ (Tetraethyllead,$(C_2H_5)_4Pb$) contains a $C-Pb$ bond,so it is an organometallic compound.Therefore,$(I), (II),$ and $(IV)$ are organometallic compounds.

Which of the following are organometallic compounds? $(I)$ Grignard reagent $(II)$ Trimethylboron $(III)$ Sodium methoxide $(IV)$ $TEL$

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