Chemistry 5070 · O Level · Arrangement of elements
Arrangement of elements — practice question
The diagram presents part of the Periodic Table.
Use only the element symbols shown in the diagram to answer the questions below. Each symbol can be selected once, more than once, or not used at all.
Give the symbol of the element that:
(a)[1]
acts as a catalyst in the Haber process.
(b)[1]
is used for making food containers because of its resistance to corrosion.
(c)[1]
makes up about one percent by volume of dry air.
(d)[1]
is obtained from haematite.
(e)[1]
forms an ion with a charge of $-2$.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The required symbol is Fe.” …