Draw and determine the C.M. positions of the following molecules. Use a periodic table of the elements for the masses of the elements (it is enough to consider the mass number). Atomic distances are generally expressed in Angstroms, 1Å= 10−10 m.

i ) CO, linear molecule with distance between the two elements equal to 1.13 Å. i right parenthesis 

ii ) CO 2 linear molecule with the C atom in the middle and equidistant from the two O’s. i right parenthesis 

iii ) H2O molecule arranged in a plane. The angle of the O-H bonds is 105° and the distance between O-H is 0.91 Å. i v right parenthesis iv) NHSubscript 3 3 is a pyramidal molecule with the N atom at the vertex and the N-H distance of 1.01 Å, while the angle between the N-H bonds equal to 108°.