a) i) What is meant by a 'coordinate bond' (dative covalent bond)? (2 marks)
ii) Draw the structure of the ammonium ion (NH4+) showing how the coordinate bond is formed from ammonia and a hydrogen ion. (3 marks)

b) i) Explain the term 'bond polarity' as applied to covalent bonds. (2 marks)
ii) State and explain whether the following molecules are polar or non-polar:
I) Carbon dioxide (CO2)
II) Water (H2O)
(4 marks)

c) Arrange the following compounds in order of increasing boiling point and give reasons for your answer:
HF, HCl, HBr, HI
(4 marks)

d) State the type of hybridisation in methane (CH4) and describe the shape of the molecule, giving the bond angle. (3 marks)

Question

a) i) What is meant by a 'coordinate bond' (dative covalent bond)? (2 marks)
   ii) Draw the structure of the ammonium ion (NH4+) showing how the coordinate bond is formed from ammonia and a hydrogen ion. (3 marks)

b) i) Explain the term 'bond polarity' as applied to covalent bonds. (2 marks)
   ii) State and explain whether the following molecules are polar or non-polar:
       I) Carbon dioxide (CO2)
       II) Water (H2O)
   (4 marks)

c) Arrange the following compounds in order of increasing boiling point and give reasons for your answer:
   HF, HCl, HBr, HI
   (4 marks)

d) State the type of hybridisation in methane (CH4) and describe the shape of the molecule, giving the bond angle. (3 marks)

Accepted Answer

undefined. Explanation will be available shortly. Sign up to access full Worked answers.

Answer

A) null

Answer

B) null

Answer

C) null

Answer

D) null

Practice more Chemistry questions