The Odd Shape of Life ( carbon)

[bjon-07]

Hi, I have a question

CH3, doublet (one unpaired electron) has a triangular planor shape.
According to vspr theory it should have a tiangular pryimidal shape. The rest of the elements in row 14 ( Si, Ge, Sn, Pb) all have a tringular pryimidal shape.

From what i understand, in carbon which is shaped like a "Y" the unpaired electron is spread out equal above and below the the 'plane' which makes up the "2D" three orbitals that take the shape of the Y.

Why don't the other elements in column 14 have this same feature. i have feeling that is has something to do with electron negativey.

thank you

 

[nautica]

The CH2 CH2 has a double bond in between then which will make an sp2 hybridized bond, which leave one electron in the unhybridized P orbital, which will be perpendicular to the plane, which the carbons and hydrogens lie in.

Nautica