Can anyone tell me which molecule shapes are symatrical?
The optimal shapes are: 2 atoms-straight line 3 atoms (no double or triple bonds)- triangle 3 atoms w/ a double of triple bond- A==B—C 4 atoms- triangular planer with the angles equal with all single bonds (that is to say take an equilateral triangle and the 4 atoms will be at the 3 points and 1 at the center of the triangle), the triangle has a disproportionally larger angle if there is a double bond 5 atoms- triangular pyramid (take the 4 sided (all triangles) 3-D shape, atoms at all 4 vertexes and 1 atom in the center). There are more, but it just gets harder to discuss them in words.
