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Group 7 (halogens) – chlorine, bromine and iodine

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Question 2

The halogens are elements in Group 7 of the Periodic Table.

a.

Select the correct answer for each of the following:

(i) At room temperature and pressure, the physical state of iodine is

  • A solid
  • B liquid
  • C gas
  • D aqueous solution

(ii) Iodine vapour is

  • A brown
  • B colourless
  • C green
  • D purple
[2]
b.

Which of the elements fluorine, chlorine, bromine, and iodine is the least reactive?

[1]
c.

Bromine reacts with hydrogen to form a colourless gas that dissolves in water to form an acid.

(i) What is the name of the colourless gas?

(ii) What is the name of the acid?

(iii) What is the formula that is used to represent both the colourless gas and the acid?

[3]

Group 7 (halogens) – chlorine, bromine and iodine Questions

  1. IGCSE
  2. /Chemistry
  3. /Group 7 (halogens) – chlorine, bromine and iodine