M3S4 – Group 7

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Group 7

1 / 10

Which of the following properties increase from left to right across the series: AgCl - AgBr - AgI?

(i) intensity of colour

(ii) solubility in ammonia solution

(iii) ease of oxidation to the halogens

(iv) solubility in aqueous ammonia

2 / 10

Which of the following increase from left to right across the series F2 - Cl2 - Br2?

(i) covalent radius of the atoms

(ii) electronegativitiy

(iii) boiling point

(iv) strength as an oxidising agent

3 / 10

The total O.N. of all the halogen atoms in these compounds ClO-, BrO-, ICl, XeF4 is:

4 / 10

A solution of Br2 and KI were mixed. Then shaken with cyclohexane. Which is correct?

(i) the bromine is reduced

(ii) the cyclohexane layer goes brown

(iii) the cyclohexane layer goes purple

(iv) the iodine is reduced

5 / 10

Chlorine disproportionates when it reacts with:

6 / 10

The oxidising agent used to extract bromine from sea water in a displacement reaction is:

7 / 10

Iodine oxidises thiosulfate ions, S2O32 -, to S4O62- . What is the oxidation number (O.N.) change for each sulfur atom?

8 / 10

When chlorine reacts with cold, aqueous sodium hydroxide the ions formed are:

9 / 10

In which of these molecules do the intermolecular forces arise largely from attractions between temporary dipoles?

10 / 10

The electron configuration of a chloride ion is:

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