February/March 2026 Paper 42

2026 · 6 questions · 51 parts · 80 marks

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Context for question 1
The symbols of elements with atomic numbers 21 to 30 are shown in Table 1.1.
Table 1.1
atomic number21222324252627282930
symbol of elementScTiVCrMnFeCoNiCuZn
Answer the following questions using only the symbols of the elements in Table 1.1.
The symbol of each element can be used once, more than once or not at all.
1(a)-(g)Transition Metals Their ReactionsMedium7 marks
Give the symbol of the element that:
is the catalyst in the Haber process
is used to galvanise iron objects
has a blue anhydrous chloride used to detect the presence of water
is the catalyst used in the reaction of alkenes with hydrogen
forms a green precipitate when aqueous sodium hydroxide is added to an aqueous solution of its ions which dissolves in excess aqueous sodium hydroxide
forms an ion that has 24 electrons and a 3+ charge
forms brass when mixed with copper