Group 2 Flashcards
Give the trend in atomic radius down group 2
increases
as extra shells of electrons shield the nuclear charge from the outer electrons and they move further away
Give the trend in 1st ionisation energies down group 2
decreases
as successive electron shells shield the nuclear charge and it becomes easier to remove an electron
Give the trend in melting points down group 2
generally decreases as metallic bonds become weaker
What is Magnesium used for in the Kroll process
reduce titanium(IV) chloride
Trend in solubility down a group 2 hydroxides
decreases
What is magnesium hydroxide used in medicine for
to neutralise stomach acid
What is calcium hydroxide used for in agriculture
neutralise soil acidity
What is the trend in group 2 sulfates down the group
decreases
What is barium sulfate used in barium metals for
to X-ray the digestive system
What is acidified barium chloride solution used to identity
sulfate ions
a white precipitate of barium sulfate forms
What is used to remove sulfur dioxide from flue gases
calcium oxide and calcium carbonate
