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How to determine the greatest d orbital splitting?


How do I determine the crystal field splitting for an arbitrary point group?How to determine peroxy oxygen?Iron chemistry: acetates for ebonizing woodHow can the intense color of potassium permanganate be explained with molecular orbital theory?How to determine the magnetic character of heteroleptic complexes?Why do better π-acceptor ligands cause smaller Δ(T) d-orbital splitting?How to Determine An Element's ColourWhat exactly is the d-orbital splitting and how does this affect the colors for transition metal compounds?Pattern to determine the maximum ionic charge for transition elements?Effect of oxidation state on d-orbital splitting













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$begingroup$


This question comes specifically from an IB Chemistry HL Paper 1 in May 2018 TZ1, namely question 8.



Which complex has the greatest d orbital splitting?



It gives 4 Complexes $ce[Fe(H_2O)_6]^2+$, $ce[Fe(H_2O)_6]^3+$, $ce[Co(H_2O)_6]^3+$, $ce[Cr(NH_3)_6]^3+$ and it says that they give the colours green, orange, blue and violet respectively.



Initially I thought that the answer would be $ce[Cr(NH_3)_6]^3+$ because it gives the highest energy light, being violet. However, the answer is given as $ce[Fe(H_2O)_6]^3+$, why is this?










share|improve this question











$endgroup$
















    2












    $begingroup$


    This question comes specifically from an IB Chemistry HL Paper 1 in May 2018 TZ1, namely question 8.



    Which complex has the greatest d orbital splitting?



    It gives 4 Complexes $ce[Fe(H_2O)_6]^2+$, $ce[Fe(H_2O)_6]^3+$, $ce[Co(H_2O)_6]^3+$, $ce[Cr(NH_3)_6]^3+$ and it says that they give the colours green, orange, blue and violet respectively.



    Initially I thought that the answer would be $ce[Cr(NH_3)_6]^3+$ because it gives the highest energy light, being violet. However, the answer is given as $ce[Fe(H_2O)_6]^3+$, why is this?










    share|improve this question











    $endgroup$














      2












      2








      2





      $begingroup$


      This question comes specifically from an IB Chemistry HL Paper 1 in May 2018 TZ1, namely question 8.



      Which complex has the greatest d orbital splitting?



      It gives 4 Complexes $ce[Fe(H_2O)_6]^2+$, $ce[Fe(H_2O)_6]^3+$, $ce[Co(H_2O)_6]^3+$, $ce[Cr(NH_3)_6]^3+$ and it says that they give the colours green, orange, blue and violet respectively.



      Initially I thought that the answer would be $ce[Cr(NH_3)_6]^3+$ because it gives the highest energy light, being violet. However, the answer is given as $ce[Fe(H_2O)_6]^3+$, why is this?










      share|improve this question











      $endgroup$




      This question comes specifically from an IB Chemistry HL Paper 1 in May 2018 TZ1, namely question 8.



      Which complex has the greatest d orbital splitting?



      It gives 4 Complexes $ce[Fe(H_2O)_6]^2+$, $ce[Fe(H_2O)_6]^3+$, $ce[Co(H_2O)_6]^3+$, $ce[Cr(NH_3)_6]^3+$ and it says that they give the colours green, orange, blue and violet respectively.



      Initially I thought that the answer would be $ce[Cr(NH_3)_6]^3+$ because it gives the highest energy light, being violet. However, the answer is given as $ce[Fe(H_2O)_6]^3+$, why is this?







      ions transition-metals oxidation-state color






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 2 hours ago









      Mathew Mahindaratne

      1,44413




      1,44413










      asked 4 hours ago









      Anthony PAnthony P

      121




      121




















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          $begingroup$

          The colour at which the complex absorbs reflects the wavelength of the d–d* electronic transitions. However, this colour is not the same as the transmitted colour (which you see), but is instead complementary to the transmitted colour. Therefore, a complex that appears purple is actually absorbing lower-energy light than a complex that appears red.






          share|improve this answer









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            $begingroup$

            The colour at which the complex absorbs reflects the wavelength of the d–d* electronic transitions. However, this colour is not the same as the transmitted colour (which you see), but is instead complementary to the transmitted colour. Therefore, a complex that appears purple is actually absorbing lower-energy light than a complex that appears red.






            share|improve this answer









            $endgroup$

















              3












              $begingroup$

              The colour at which the complex absorbs reflects the wavelength of the d–d* electronic transitions. However, this colour is not the same as the transmitted colour (which you see), but is instead complementary to the transmitted colour. Therefore, a complex that appears purple is actually absorbing lower-energy light than a complex that appears red.






              share|improve this answer









              $endgroup$















                3












                3








                3





                $begingroup$

                The colour at which the complex absorbs reflects the wavelength of the d–d* electronic transitions. However, this colour is not the same as the transmitted colour (which you see), but is instead complementary to the transmitted colour. Therefore, a complex that appears purple is actually absorbing lower-energy light than a complex that appears red.






                share|improve this answer









                $endgroup$



                The colour at which the complex absorbs reflects the wavelength of the d–d* electronic transitions. However, this colour is not the same as the transmitted colour (which you see), but is instead complementary to the transmitted colour. Therefore, a complex that appears purple is actually absorbing lower-energy light than a complex that appears red.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 4 hours ago









                orthocresolorthocresol

                39.6k7114242




                39.6k7114242



























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