a) AlCl3 and NO2 are two examples of chemical species that violate the octet rule.
i. Draw the Lewis structure for AlCl3 and NO2.
[2 Marks]
ii. Draw the molecular structure when two AlCl3 molecules combine to form Al2Cl6.
[1 Mark]
iii. Draw the molecular structure when two NO2 molecules combine to form N2O4.
[1 Mark]
iv. Explain the difference in the bond formation for Al2Cl6 and N2O4.
[4 Marks]
b) Predict the shape and bond angle in XeF4 molecule by using the VSEPR theory.
[3 Marks]
c) Methylene imine. CH2NH, is the simplest imine and a stable colourless gas.
i. Show the hybridisation of C and N in CH2NH molecule.
[3 Marks]
ii. Sketch the overlapping in CH2NH and label the bonds.
[3 Marks]