Question

40. Which of the following statements about chair cyclohexane is
WRONG?
A. The dihedral angle of two axial bonds on adjascent bonds is
180
0
B. The dihedral angle of two equatorial bonds on adjascent bonds
is 60
C. The dihedral angle between axial bond and equitorial bonds on
adjascent bonds is 120
O D. axial H-atoms on Ci, C3, C5 form an equilateral triangle​

Answer 1

Explanation:

D. axial H-atoms on Ci, C3, C5 form an equilateral triangle​

Answer 2

Answer:

D. axial H-atoms on Ci, C3, C5 form an equilateral triangle​

A closer look at the cyclohexane chair conformation reveals that the twelve hydrogens are not structurally identical. Six of them are called equatorial because they are found towards the carbon ring's edge. The remaining six are axial because they are lined parallel to the ring's symmetry axis and are positioned above and below the approximate plane of the ring (three in each place).