Provide ideal values for dihedral angles C5-C6-C1-H2 (axial H atom) and of C5-C6-C1-H1 (equatorial H atom) and the bond angle H2-C1-H1 based on tetrahedral structures (0.4/12): C5-C6-C1-H2 (axial) = C5-C6-C1-H1 (equatorial) = H2-C1-H1 = = 0 Provide possible reasons for any significant differences between the "ideal" and your calculated values (no more than 8 lines) (0.4/12):