Which of the following is the least basic?

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(D) The basicity of boron trihalides $(BX_3)$ depends on the extent of $p\pi-p\pi$ back-bonding between the halogen atom and the boron atom. In $BF_3$

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$BF_3$

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(D) The basicity of boron trihalides $(BX_3)$ depends on the extent of $p\pi-p\pi$ back-bonding between the halogen atom and the boron atom. In $BF_3$,the fluorine atom has a small size and its $2p$ orbitals overlap effectively with the empty $2p$ orbital of boron,leading to the strongest back-bonding. This reduces the electron-deficient nature of boron,making $BF_3$ the least basic among the given trihalides. Therefore,the order of basicity is $BF_3 < BCl_3 < BBr_3 < BI_3$.

Similar Questions

Which of the following is only acidic in nature?

Which of the following produce an alkaline solution when dissolved in water?
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$(iii)$ $SO_2$
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The correct statements among $I$ to $III$ regarding group $13$ element oxides are,
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Identify the correct statements from the following :
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$II$. The dimer of aluminium chloride has three $Al-Cl-Al$ bridge bonds.
$III$. Boron is a very hard refractory solid of high melting temperature.

Which one of the following metallic oxides exhibits amphoteric nature?

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