Group 2 Flashcards
Explain the trend in atomic size down group 2
They get bigger down the group because each element has an extra shell
Explain the trend in melting points down group 2
It gets lower because the electrons are further away from the nucleus
Which element does not fit the trend in melting points in group 2?
Magnesium
Explain the trend in ionisation energies down group 2
It decreases down the group because the electrons get further away from the nucleus
What is the trend in reactivity down group 2?
They get more reactive down the group
What is the trend in reactivity with the group 2 elements in water?
They get more reactive
What is the trend in solubility of the group 2 hydroxides?
They get more soluble
How do you describe the solubility of Mg(OH)2?
Almost insoluble
How do you describe the solubility of Ca(OH)2?
Sparingly soluble
What does Ba(OH)2 dissolve to produce?
A strongly alkaline solution
What is the trend in solubilities of group 2 sulfates?
They get less soluble
What is Mg(OH)2 used for?
Antacids
What is BaSO4 used for?
Medical imaging (x-rays)
Testing for sulfate ions
How is the solubility of BaSO4 described?
Virtually insoluble
What is Ca(OH)2 used for?
Treating acidic soils
