Topic 4: Inorganic Chemistry and the Periodic Table

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  • Created by: LouiseG
  • Created on: 16-04-16 08:30

1. Why is Mg (carbonate and nitrate) the least thermally stable of the G2 elements ?

  • Magnesium isn't the least thermally stable, Barium is.
  • Magnesium forms radioactive carbonates and nitrates that are unstable and break down
  • Magnesium has the smallest ionic radius as a 2+ cation so a greater polarising ability (more charge dense)
  • Magnesium has the largest nuclear charge so can most easily pull apart the electron cloud
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Other questions in this quiz

2. What's a common test for the Hydrogen Halides?

  • Turns Fehling's solution red
  • Reacts with ammonia gas to form a dense white smoke of ammonium halide
  • Form a white precipitate of Barium Halide when Barium Nitrate is added to a solution
  • Turns damp red litmus blue, then beaches it white

3. What would you expect to observe when NaI reacts with H2SO4 ?

  • Misty fumes of HI ; Purple fumes/black solid of I2 ; Choking gas of SO2 ; Yellow solid of S ; Eggy gas of H2S
  • White crystalline solid of NaSO4 , Purple fumes of I2 , A gas that would relight a splint (O2) and dense white fumes of HI
  • Misty fumes of HI and the residue of NaHSO4 only - it is the poorest recuder
  • Brown fumes /orange liquid ; Choking gas

4. Which is the most electronegative element of Group 7?

  • Flourine
  • Iodine
  • Chlorine
  • Asatine

5. What is the trend in solubility of the sulfates and hydroxides?

  • They are more soluble down the group
  • They are less soluble down the group
  • Sulfates decreases down the group ; hydroxides increases
  • Hydroxides decreases down the group, Sulfates increases


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