SL Paper 2
The relative atomic mass of naturally occurring copper is 63.55. Calculate the abundances of \(^{{\text{63}}}{\text{Cu}}\) and \(^{{\text{65}}}{\text{Cu}}\) in naturally occurring copper.
[2]
c.
The isotopes of some elements are radioactive. State a radioisotope used in medicine.
[1]
d.
State a balanced equation for the reaction of sodium with water. Include state symbols.
[2]
e.
With reference to electronic arrangements, suggest why the reaction between rubidium and water is more vigorous than that between sodium and water.
[2]
f.
Describe and explain what you will see if chlorine gas is bubbled through a solution of
(i) potassium iodide.
(ii) potassium fluoride.
[3]
g.