(a(i))[1]
Which of C, D, E or F is in the gaseous state at room temperature?
(a(ii))[1]
What kind of bonding is found in substance E?
(a(iii))[1]
Which of C, D, E or F is soluble in water?
(a(iv))[1]
Which of C, D, E or F conducts electricity in the solid state?
(b)[1]
The halogens have molecules that contain two atoms. What name is given to molecules with only two atoms?
(c)[1]
What does the symbol $\rightleftharpoons$ mean?
(d(i))[2]
Complete the chemical equation for this reaction. $…… + 2\text{KI} \rightarrow \text{I}_2 + ……\text{KCl}$
(d(ii))[1]
Aqueous iodine is mixed with aqueous potassium chloride, but no reaction occurs. Suggest, in terms of chemical reactivity, why there is no reaction.