Transition elements — Chemistry 0620 IGCSE Question & Worked Solution

Which row gives the colours of the named salts?

Ahydrated copper(II) sulfate: blue; hydrated cobalt(II) chloride: blue; anhydrous copper(II) sulfate: white; anhydrous cobalt(II) chloride: pink
Bhydrated copper(II) sulfate: blue; hydrated cobalt(II) chloride: pink; anhydrous copper(II) sulfate: white; anhydrous cobalt(II) chloride: blue
Chydrated copper(II) sulfate: white; hydrated cobalt(II) chloride: blue; anhydrous copper(II) sulfate: blue; anhydrous cobalt(II) chloride: pink
Dhydrated copper(II) sulfate: white; hydrated cobalt(II) chloride: pink; anhydrous copper(II) sulfate: blue; anhydrous cobalt(II) chloride: white

Transition elements — practice question