Structure and Properties Assignment
1. Draw Lewis structures for the following [5 marks]
A) FO 1B) NO 1+
C) BF41D) PCl3
E) SiCl2H2
i) Identify the type of hybridization present in any of the above examples
where applicable
ii) Identify which of the above examples contain co-ordinate covalent
bonding.
2. Determine the 3-D shapes of the following and show your reasoning. [20
marks]
A) KrCl2
B) PCl6 1C) TeSCl4
D) SeNCl3
3E) ClBr3
F) KrBr4
G) AsO3
H) AsCl4 1I) FO4 1J) PF3Cl2
3. Determine if each of the following will dissolve in carbon tetrabromide?
Justify your answer. [8 marks]
A) PSBr3
B) TeH2l2
C) ClH2Br3
4. Explain why solid aluminum conducts electricity and road salt conducts in
solution and dry ice does not conduct at all. [6 marks]
5. Explain how beryllium can form BeH2 as well as BeBr4 2-. [4 marks]
6. For each of the following substances identify the different attractions
that must be overcome to vapourize these substances into atomic gases.
[7 marks]
A) H2Se
B) lead
C) MgCl2
D) iodine
E) SiO2
7. Indicate the type(s) of intermolecular forces that can possibly exist
between molecules of these compounds. Show your reasoning. [8 marks]
A) NH3
B) PF5
D) SiHCl3
E) H2O
8. Which of the following would have the highest expected melting point?
Explain your answer. [6 marks]
A) Cl2 O or PCl3
B) graphite or C3H8
C) I2 or NaCl
9. With the aid of valence bond theory show the overlapping bonding
orbitals, identify all pi and sigma bonds and state the 3-D shape of the
central atoms in : A) xenon tetrafluoride B) ClCP C) HBO [6 marks]
10. Use the concept of formative charge to draw the most stable
configuration for each of the phosphite ion and the perbromate ion. [4
marks]