Question 27
[Maximum number: 1]
Part of the reactivity series is shown.
```
potassium
X
calcium
Y
aluminium
```
Which metals are represented by X and Y ?
X
Y
copper
magnesium
sodium
magnesium
sodium
silver
copper
silver
CAIE IGCSE Chemistry Ordering Metals by Reactivity
Practise recalling the metal reactivity series and applying relative positions to choose displacement outcomes, simple-cell voltages or extraction routes.
How this is tested
- recall the stated order from potassium through carbon and hydrogen to silver and gold
- use wider separation in the series to predict a larger simple-cell voltage
- use relative position to decide which metal reduces another metal oxide or displaces its ions