The number of 3c-2e bond and 2c-2e bond prese | vedclass

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(B) The structure of $Be_2(CH_3)_4$ is a dimer where two $Be$ atoms are bridged by two methyl groups.In this structure,there are two $3c-2e$ (three-ce

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$2, 14$

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(B) The structure of $Be_2(CH_3)_4$ is a dimer where two $Be$ atoms are bridged by two methyl groups.In this structure,there are two $3c-2e$ (three-center two-electron) bonds formed by the bridging $Be-C-Be$ units.Each $Be$ atom is also bonded to one terminal methyl group via a $2c-2e$ bond.Additionally,each of the four methyl groups contains three $C-H$ bonds,which are $2c-2e$ bonds.Total $2c-2e$ bonds = $2$ (terminal $Be-C$ bonds) + $4 	imes 3$ ($C-H$ bonds) = $2 + 12 = 14$.Thus,the number of $3c-2e$ bonds is $2$ and the number of $2c-2e$ bonds is $14$.

The number of $3c-2e$ bond and $2c-2e$ bond present in $Be_2(CH_3)_4$ are $ . . . . . . $ and $ . . . . . . $ respectively.

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