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  4. The AsF5 molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are

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Q. The $AsF_5$ molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are

Jharkhand CECEJharkhand CECE 2010Chemical Bonding and Molecular Structure

Solution:

$As =1 s^{2}, 2 s^{2}, 2 p^{6}, \underbrace{3 s^{1} 3 p_{x}^{1} 3 p_{y}^{1} 3 p_{z}^{1} 3 d^{1}}_{s p^{3} d \text { hybridisation }}$
Due to this type of hybridisation geometry of the $AsF _{5}$ molecule is trigonal bipyramidal and the hybrid orbitals used by As-atom are $s_{1}, p_{x}, p_{y}, p_{z}$ and $d_{x y}$.