Back bonding in BF_3 does not affect | vedclass

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(C) In $BF_3$,the boron atom is $sp^2$ hybridized and the molecule has a trigonal planar geometry with a bond angle of $120^{\circ}$.Back bonding occu

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Bond angle,Planarity and Geometry

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(C) In $BF_3$,the boron atom is $sp^2$ hybridized and the molecule has a trigonal planar geometry with a bond angle of $120^{\circ}$.Back bonding occurs due to the donation of electron density from the filled $2p$ orbital of $F$ to the empty $2p$ orbital of $B$.This back bonding results in partial double bond character in the $B-F$ bond,which decreases the $B-F$ bond length and increases the $B-F$ bond order.It also reduces the Lewis acidic strength of $BF_3$ because the electron deficiency of the boron atom is partially compensated.However,the $sp^2$ hybridization,the trigonal planar geometry,and the bond angle of $120^{\circ}$ remain unaffected by the back bonding.

Back bonding in $BF_3$ does not affect

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