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5 marksStructure of the Atom

CSEC Physics · January 2011 · Paper 2 · Question 6(b)(i)

In final revision for your CSEC Physics examinations, your teacher gave you the following data on some unknown elements: ⁴⁰₁₉P; ²³⁵₉₂Q; ⁴⁰₁₈R; ²³⁸₉₂X; ³⁹₁₉Y.

You are required to determine: which nuclides have the identical mass number

The mark scheme is shown once you've answered.

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Other parts of this question

  1. 6(a)For EACH of these scientists, describe briefly TWO main ideas they put forward concerning the nature of the atom, including the name of EACH of their models.[6 marks]
  2. 6(b)(ii)You are required to determine: how many neutrons are in the heaviest nuclide[1 mark]
  3. 6(b)(iii)You are required to determine: which nuclides are isotopes.[1 mark]
  4. 6(c)(i)Use the data to determine: TWO different values of the half-life of the element[4 marks]
  5. 6(c)(ii)Use the data to determine: The average half-life of the element[1 mark]

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