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advanced higher chemistry

I was just wandering why the colour of Nickel chloride is green. Is this due to the splitting of d orbitals or am I completely on the wrong track?
Original post by Sipun
I was just wandering why the colour of Nickel chloride is green. Is this due to the splitting of d orbitals or am I completely on the wrong track?


You are on the right track.
In the crystal lattice the chloride and water molecules bonded to the nickel ions that make up the lattice, split the 3d orbitals into non-degenerate sets. This allows the electrons to absorb light energy of visible wavelength and promote between non-degenerate 3d orbitals.
The colour seen is the region of the electromagnetic visible spectrum that is not absorbed - i.e. the complementary colour
@charco are you a chemistry teacher? Because you always give really good chemistry explanations!
Original post by booklover1313
@charco are you a chemistry teacher? Because you always give really good chemistry explanations!

:ninja:

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