Question

What is hybridisation ? Explain the formation of the following molecules using
hybridisation
a) BeCl2
b) BF3
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Answer 1

Answer:

• In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.

A) During the formation of BeCl2, beryllium atom bonds with two chlorine atoms via single covalent bonds. The number of electron pairs around the central atom will be two. No lone pair is found in the molecule. If we analyze this information then we can conclude that BeCl2 has sp hybridization.

B) 1 s orbital of Be hybridize with 1 p orbital of Be in excited state and these half filled sp-orbitals form a sigma bond with Cl atoms. 1 s orbital of Be hybridize with 2 p orbital of Be in excited state and these half filled sp-orbitals form a sigma bond with F atoms.

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Answer 2

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