Q-CH4 ,NH3 & H2O have same geometry tetrahedral but why they differ it's shape?

Q-CH4 , NH3 & H2O have same geometry tetrahedral but why they differ it's shape?

Ans- CH4 , NH3 & H2O compound have SP³ hybridisation, so their geometry is tetrahedral .

Geometry depends upon total bond pair and lone pair available in given compound but shape of any compound depends upon its bond pair available in  given compound.

 Here we see the Lewis structure of CH4

In CH4 there are 4 bond pair and no lone pair so  it's shape is tetrahedral.

Lewis structure of NH3

In NH3 there is 3bond pair& 1lone pair available,so it's shape is piramidal.

Lewis structure of H2O

In H2O, there is 2 bond pair and 2 lone pair available.so it's shape is Bent or Angular.

.                                           Anupriya

                                     M.Sc(chem),B.Ed