Chemistry 5070 · O Level · Arrangement of elements
Arrangement of elements — practice question
The diagram shows a section of the Periodic Table.
The elements included are:
B, C, N, O, F, He
Al, Si, P, S, Cl, Ne
Ga, Ge, As, Se, Br, Ar
I, Xe
Use only the elements displayed in the diagram to answer the questions.
Each element can be chosen once, more than once, or not used at all.
(a)[1]
Give the symbol of an element that forms a stable ion of type $X^{2-}$.
(b)[1]
Give the symbol of an element that is a light green gas at room temperature.
(c)[1]
Write the symbol for an element whose ion gives a yellow precipitate when aqueous silver nitrate is added.
(d)[1]
Write the symbol for an element used in the manufacture of food containers.
(e)[1]
Write the symbol for an element that is a diatomic gas and accounts for 78% of dry air.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\text{O}$ / $\text{S}$ / $\text{Se}$” …