Period 3 from the Periodic Table is displayed below.
sodium magnesium aluminium silicon phosphorus sulfur chlorine argon
Use only these elements to answer the questions.
An element may be chosen once, more than once, or not chosen at all.
State which element:
(a)[1]
is a gas at room temperature and pressure
(b)[1]
forms a basic oxide with a formula of the form $X_2O$
(c)[1]
is made of atoms which have a full outer shell of electrons
(d)[1]
forms an oxide which causes acid rain
(e)[1]
is extracted from bauxite
(f)[1]
forms an oxide which has a macromolecular structure
(g)[1]
consists of diatomic molecules
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “chlorine OR argon” …