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3 marksGroup IV Elements

CAPE Chemistry Unit 1 · 2011 · Paper 2 · Question 6(c)(ii)

Account for the following observation, using the bonding present in the compounds: When exposed to the atmosphere, SiCl4 produces white fumes while no such fumes are produced with CCl4.

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Other parts of this question

  1. 6(a)Copy and complete the information in Table 2 regarding some physical properties of elements in Group IV of the Periodic Table.[4 marks]
  2. 6(b)Use a knowledge of structure and bonding to explain these trends.[4 marks]
  3. 6(c)(i)Account for the following observation, using the bonding present in the compounds: Silicon tetrachloride is a volatile liquid at room temperature.[1 mark]
  4. 6(d)(i)Name the type of reaction taking place.[1 mark]
  5. 6(d)(ii)State the name and the formula of the substance responsible for the presence of the white fumes.[2 marks]
  6. 6(e)State ONE use of a ceramic material based on silicon (IV) oxide.[1 mark]

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