13. is coloured, 1. is also coloured
Which of the following is coloured due to polarisation?
1. Ag3PO4
2. Cu2Cl2
3. K4[Fe(CN)6]
4. CuF2
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12 Answers
1I thnk (b) and (C) are not coloured.....(D) is coloured.....i thnk ....plz confirm answers,.....
106then answer is Ag3PO4. It is coloured due to polarisation.
Ag+ is small and PO43- is quite large.. So covalent character increases.
(charge is also high)
So, it is coloured similar to AgI
1ya ...Ag3PO4 is yellow coloured......and ya its due to polarisation.....plz confirm answers...
1@ Ashish...as per your solution why cant (3) be the ans????
plz help....i cant understand how polarization cause coloured salts.......
29Polarisations occurs in covalent compounds...whereas K4[Fe(CN)6] is a coordination compound...
K4[Fe(CN)6] is colourless..
29Potassium ferrocyanide is dimagnetic..so it is shud be colourless according to the theories that we have studied...Valence bond theory and Crystal field theory..though there were some drawbacks in these theories that's why..the new theories like the ligand field theory and others were proposed.,.but they are not in the syllabus...
I also checked wikipedia..and google...but everywhere the have disscussed abt the colour of K4[Fe(CN)6] . 3H2O crystals that they are yellow coloured....
1Govind is correct.......even I also know that potassium ferrocyanide is colourless.......while its crystals may be coloured....for example CuSO4 is colorless but crystalline CuSO4 .5H2O is coloured......even in my earlier post in this thread i mentioned that potassium ferrocyanide is colourless......