
Which of the following is a coloured compound?
(A)
(B)
(C)
(D)
Answer
156.9k+ views
Hint: The transition metal compounds are often colored because of transition of electrons between d orbitals of different energy. The d block elements having unpaired electrons form coloured compounds.
Complete step by step solution:
When a visible light falls on a transition metal compound or ion, the unpaired electrons present in the lower energy d-orbital get promoted to higher energy d-orbital. This is called a d-d transition.
Therefore, the transmitted light shows the same color complementary to the absorbed color.
Therefore in
The electronic configuration of Cu is
Thus, it has one unpaired electron.
So, it has one unpaired electron and hence, is a coloured compound.
It is a white crystalline, hygroscopic solid with a rutile-type crystal structure.
Hence, option A is correct.
Note: Copper fluoride can be used to make fluorinated aromatic hydrocarbons by reacting with aromatic hydrocarbons in an oxygen- containing atmosphere at temperatures above . This reaction is only effective in making compounds that can survive at the temperature used.
Complete step by step solution:
When a visible light falls on a transition metal compound or ion, the unpaired electrons present in the lower energy d-orbital get promoted to higher energy d-orbital. This is called a d-d transition.
Therefore, the transmitted light shows the same color complementary to the absorbed color.
Therefore in
The electronic configuration of Cu is
Thus, it has one unpaired electron.
So, it has one unpaired electron and hence,
It is a white crystalline, hygroscopic solid with a rutile-type crystal structure.
Hence, option A is correct.
Note: Copper fluoride can be used to make fluorinated aromatic hydrocarbons by reacting with aromatic hydrocarbons in an oxygen- containing atmosphere at temperatures above
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