MEDIUM
AS and A Level
IMPORTANT
Earn 100
Draw dot-and-cross diagram for hydrogen sulphide, molecule and then predict the shape.
Important Questions on Chemical Bonding
MEDIUM
AS and A Level
IMPORTANT
Draw dot-and-cross diagram for phosphine, molecule and then predict the shape.
EASY
AS and A Level
IMPORTANT
Draw dot-and-cross diagram for a molecule of selenium hexafluoride, . A single selenium atom has six electrons in its outer shell.
MEDIUM
AS and A Level
IMPORTANT
Predict the shape of selenium hexafluoride.
EASY
AS and A Level
IMPORTANT
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
In trimethylamine, three groups are attached to the nitrogen by bonds. The repulsion of the groups is slightly greater than the repulsion of the atoms in ammonia. Which one of these bond angles for the bond in trimethylamine, is correct?
EASY
AS and A Level
IMPORTANT
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
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
Answer the following, giving a full explanation in terms of metallic bonding:
Why does aluminium conduct electricity better than sodium?
