EASY
AS and A Level
IMPORTANT
Earn 100

Draw dot-and-cross diagram for a molecule of selenium hexafluoride, SeF6. A single selenium atom has six electrons in its outer shell.

Important Questions on Chemical Bonding

MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 7
Predict the shape of selenium hexafluoride.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 7
Draw the shape of the phosphorus(V) chloride molecule that you drew as a dot-and-cross diagram for the covalently bonded molecule.Show only the outer electron shell.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 8
In trimethylamine, CH33N: three CH3 groups are attached to the nitrogen by C-N bonds. The repulsion of the CH3 groups is slightly greater than the repulsion of the H atoms in ammonia. Which one of these bond angles for the C-N-C bond in trimethylamine, is correct?
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 9
 Answer the following, giving a full explanation in terms of metallic bonding:
          Explain why aluminium has a higher melting point than sodium. 
 
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 9

Answer the following, giving a full explanation in terms of metallic bonding:

    The thermal conductivity of stainless steel is 82 W m-1 K-1 . The thermal conductivity of  copper  is 400 W m-1 K-1. Why do some stainless steel saucepans have a copper base? 

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 9

 Answer the following, giving a full explanation in terms of metallic bonding:

     Why does aluminium conduct electricity better than sodium? 

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 10

Is the following molecule polar or non-polar? Give a reason for your answer. (Electronegativity values: F = 4.0, Cl = 3.0, Br= 2.8, S =2.5, C = 2.5, H=2.1) 
 

                               chlorine, Cl2 

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 4 - Chemical Bonding>Questions>Q 10

Is the following molecule polar or non-polar? Give a reason for your answer. (Electronegativity values: F = 4.0, Cl = 3.0, Br= 2.8, S =2.5, C = 2.5, H=2.1) 
 

                              hydrogen fluoride, HF