Inorganic Chemistry #6: Physical and Chemical Properties of the Group 17 Halogens (Slides and Tasks)

LESSON OBJECTIVE: Describe and understand the trends observed in the physical and chemical properties of the group 17 halogens.

In this lesson we investigate the physical properties and chemical reactivity of the Group 17 Halogens and investigate the formation and properties of hydrogen halides. This is lesson six in our inorganic chemistry series for Unit 11: Group 17 (from the Cambridge International AS Chemistry Curriculum (9701) 2019-2021 curriculum).

Learning Outcomes:
(taken from the Cambridge International AS and A Level Chemistry (9701) 2019-2021 curriculum)
11.1 Physical properties of the Group 17 elements
a) describe the colours and the trend in volatility of chlorine, bromine and iodine

b) interpret the volatility of the elements in terms of van der Waals’ forces

11.2 The chemical properties of the elements and the hydrides
a) describe the relative reactivity of the elements as oxidising agents (see also Section 6.3(f))

b) describe and explain the reactions of the elements with hydrogen

c) i) describe and explain the relative thermal stabilities of the hydrides
ii) interpret these relative stabilities in terms of bond energies