Chemistry · May / June 2019 · Paper 11 · Question 9

Two statements about metals are given. 1 Metals contain a lattice of negative ions in a ‘sea of electrons’. 2 The electrical conductivity of metals is related to the mobility of the electrons in the structure. Which is correct?

1. ABoth statements are correct and statement 1 explains statement 2.
2. BBoth statements are correct but statement 1 does not explain statement 2.
3. CStatement 1 is correct and statement 2 is incorrect.
4. DStatement 2 is correct and statement 1 is incorrect.

As printed in the paper