if the repulsion is more in the non bondede pairs then the angle should also be me . then how is it like in water the angle is less where tere are two lone pairs?

Asked by manisha | 21st Sep, 2012, 11:28: AM

Expert Answer:

Around the Oxygen atom in the water molecule are pieces: 2 hydrogen atoms and 2 pairs of extra valence electrons. Each piece repels each other piece, so they try to get as far away from each other as possible. The resulting geometry is called a tetrahedron (picture a 4-sided pyramid with a triangular base) with the oxygen at the center. When we draw the water molecule, usually we don't draw the 2 pairs of valence electrons, so the molecule looks like a V. 

Answered by  | 21st Sep, 2012, 11:45: AM

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