(a)[2]
Determine the percentage by mass of nickel present in nickel carbonyl.
(b)[3]
Calculate the greatest possible volume of gas produced at room temperature and pressure when 1.71 g of nickel carbonyl reacts fully with hydrogen iodide.
(c)[2]
The diagram shows the structure of a nickel carbonyl molecule. Predict two physical properties of nickel carbonyl.
(d)[2]
The proton numbers and exact relative atomic masses of cobalt and nickel are listed in the table. Suggest why cobalt has a higher relative atomic mass than nickel.
(e)[1]
Hydrogen iodide in aqueous solution is a strong acid. What is meant by the term strong acid?