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3 marksAtomic Structure

CSEC Chemistry · January 2015 · Paper 2 · Question 2(c)

Analysis of a sample of ICl shows that it consists of molecules of the same molecular formula, but with different molar masses. What is a possible explanation for this?

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Other parts of this question

  1. 2(a)(i)In the space below draw a diagram to show the arrangement of electrons in the chlorine atom. [Atomic number = 17][2 marks]
  2. 2(a)(ii)Using valence shells only, draw a diagram below to show the bonding which occurs in ICl.[2 marks]
  3. 2(b)State TWO reasons why ICl is expected to have a low melting point.[2 marks]
  4. 2(d)Write a balanced equation for the reaction which occurs when chlorine is reacted with aqueous potassium iodide.[2 marks]
  5. 2(e)(i)the change in oxidation number that the iodide ions undergo[2 marks]
  6. 2(e)(ii)whether chlorine is acting as an oxidizing or a reducing agent. State a reason for your answer.[2 marks]

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