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Q.
What is the geometry of water molecule?
MHT CETMHT CET 2018Chemical Bonding and Molecular Structure
Solution:
Geometry of a molecule can be predicted by using the formula
$H=\frac{1}{2}[V E+V-C+A]$
$VE$ = valence shell electrons of the central atom
$Y$ = number of monovalent atom
$C=$ total positive charge
$A=$ total negative charge
In case of $H _{2} O$ molecule,
$H=\frac{1}{2}[6+2-0+0]=4$
Hybridisation of $H _{2} O$ molecule comes out to be $s p^{3} .$ Thus the geometry of $H _{2} O$ molecule is tetrahedral but the shape is distorted tetrahedral or angular due to presence of two lone pair of electrons.
