Chapter 4 2019/2020
Chapter 4 2019/2020
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a) Explain each of the following statements:
i. Upon reaction with fluorine, oxygen only forms OF2 whereas sulphur forms SF2, SF4 and SF6 molecules.
[2 Marks]
ii. The shape of PF5 molecule differs from that of IF5 molecule.
[2 Marks]
iii. Of the three possible resonance structures for OCN- below, III is the best structure.
[2 Marks]
b) Illustrate the hybridization of the central atom in SF4 using orbital diagrams. Show and label the overlapping of orbitals in the molecule.
[7 Marks]
c) Explain the difference in melting point between elements in Group 1 and Group 17.
[5 Marks]
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