Question

# The number of lone pairs of electrons on the central atoms of $$H_2O, \,SnCl_2, \,PCl_3$$ and $$XeF_2$$ respectively are :

A
2, 1, 1, 3
B
2, 2, 1, 3
C
3, 1, 1, 2
D
2, 1, 2, 3

Solution

## The correct option is A 2, 1, 1, 3The number of lone pairs of electrons on the central atoms of $$\displaystyle H_2O$$, $$\displaystyle SnCl_2$$, $$\displaystyle PCl_3$$ and  $$\displaystyle XeF_2$$ respectively , are 2, 1, 1, 3.$$\displaystyle H_2O$$ has 2 bond pairs and 2 lone pairs of electrons. It has bent geometry.$$\displaystyle SnCl_2$$ has 2 bond pairs and one lone pair of electrons. It has bent geometry.$$\displaystyle PCl_3$$ has 3 bond pairs and one lone pair of electrons.  It has pyramidal geometry.$$\displaystyle XeF_2$$ has 2 bond pairs and 3 lone pairs of electrons. It has see-saw shape.Chemistry

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