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. How many electrons can fit on the 2nd quantum shell? Which orbitals does it contain?

  • 10; the s (1x2) and p (2x4) orbitals
  • 8 ; the s (1x2) and p (3x2) orbitals
  • 6; the p(3x2) orbitals
  • 18; the s (1x2) p (3X2) and d (5x2) orbitals
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2. What shape is an s-orbital?

  • S-shaped
  • Spherical
  • 5-lobed
  • Dumb-bell

3. What block is Ga in?

  • f-block
  • p-block
  • d-block
  • s-block

4. What is the relative mass of an electron?

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

5. How do you work out the Molecular mass of a monoatomic element from it's mass spectrum?

  • Multiply each M/Z ratio by the abundance / %intensity and divide by the total abundance / 100 if it's a %
  • Add up the atomic masses of each isotope
  • Use the most abundant peak
  • Use the middle peak's m/z value

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