Aqueous copper(II) sulfate reacts with an excess of aqueous ammonia to give a dark
blue solution.
The dark blue solution contains the octahedral complex ion, [Cu(NH ) (H O) ]2+.
Question
Mathematics
Edexcel2023
(1)
A +2
B +3
C +4
D +6
(ii) Draw a diagram to show the shape of a [Fe(CN) ]4– ion, using the structure CN−
Question
Mathematics
Edexcel2023
to represent a cyanide ligand and showing how the cyanide ligands bond to
the central iron ion.
(2)