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The type of hybridisation of boron in di...

The type of hybridisation of boron in diborane is
(a) sp , (b) `sp^(2)` , (c) `sp^(3)` , (d) `dsp^(2)`

A

sp-hybridization

B

`sp^(2)`-hybridization

C

`sp^(3)`-hybridization

D

`sp^(3) d^(2)`-hybridization

Text Solution

AI Generated Solution

The correct Answer is:
To determine the type of hybridization of boron in diborane (B₂H₆), we can follow these steps: ### Step 1: Understand the electronic configuration of boron Boron (B) has an atomic number of 5, which means its electronic configuration is: - 1s² 2s² 2p¹ ### Step 2: Excitation of electrons In the excited state, one of the 2s electrons can be promoted to the 2p orbital. This results in the following configuration: - 1s² 2s¹ 2p² ### Step 3: Determine the number of orbitals involved in hybridization After excitation, boron has three valence orbitals available for bonding: - 1 from the 2s orbital and 2 from the 2p orbitals. ### Step 4: Hybridization process These three orbitals (1s and 2p) will undergo hybridization to form four equivalent hybrid orbitals. The type of hybridization that occurs here is: - sp³ hybridization. ### Step 5: Structure of diborane In diborane (B₂H₆), each boron atom forms bonds with hydrogen atoms. The sp³ hybrid orbitals of boron overlap with the 1s orbitals of hydrogen atoms. The structure of diborane consists of: - Four terminal hydrogen atoms bonded to two boron atoms and two bridging hydrogen atoms that connect the two boron atoms. ### Conclusion Based on the above analysis, the type of hybridization of boron in diborane is **sp³**. Therefore, the correct answer is: - (c) sp³ ---
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