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 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
- Magnesium forms radioactive carbonates and nitrates that are unstable and break down
1 of 18
Other questions in this quiz
2. When NaBr reacts with H2SO4, which of these is not a possible product?
3. How are the hydrogen halides best described?
- Misty white fumes
- Dense white smoke
- Green/brown/violet vapours
- Alkaline acids that turn damp red litmus paper blue
4. What is the trend in ionisation energy down group 2?
- It decreases due to the replusion and number of quantum shells increasing
- It increases up to Calcium then drops sharply
- It increases due to the increased nuclear charge
- It decreases due to the size of the metallic radius decreasing
5. Which of these is not a property that decreases down the halogen group?
- Reducing ability
- Oxidising power