What is the principal cause of the blue colour of 
?
A
transitions in sulfate B
d-d transitions of 
in an octahedral field
in an octahedral field C
Colour of lattice water itself
D
Charge-destruction by hydration only
Text Solution
Verified by ExpertsThe correct answer is:
B
Hydrated copper (II) sulphate contains the aqua complex (e.g., 
/distorted octahedral field), which shows colour due to d-d transitions; anhydrous 
(no ligand field) is white, while 
is blue.
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