Topic 1: Atomic Structure and the Periodic Table

All questions from the new (2015) specification. I hope they're useful!

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1. What group is this element in, if these are successive ionisation energies: 578 1817 2744 11577 14842

  • Group 4
  • Group 2
  • Group 3
  • Group 1
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2. What is trend in atomic radius across a period?

  • It increases up to the covalent macromolecules, then decreases
  • It increases (larger nucleus)
  • It decreases (more protons)
  • It increases (more electrons)

3. What is the relative atomic mass?

  • The weighted mean mass of an atom of an element compared to 1/12 the mass of a c-12 atom
  • The mass of an isotope compared to 1/12 the mass of the C-12 isotope
  • The mass of an atom of an element compared to C-12
  • The sum of the protons and neutrons in the nucleus

4. What is the relative mass of an electron?

  • 1/1840
  • 0.005
  • 1/30,000
  • 0.000001

5. What is the trend in ionisation energy down a group?

  • It varies (proton and repulsion effect depends on the element)
  • It decreases (more quantum shells)
  • It increases (more protons)
  • It increases up to the fourth element then decreases


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