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Which of the following metal does not form a coloured salt?(a) Thorium(b) Zinc(c) Bronze(d) CobaltI have been asked this question in a job interview.I want to ask this question from Application of d and f-Block Elements topic in portion D and F-Block Elements of Chemistry – Class 12

Answer»

Right choice is (b) Zinc

For explanation: Zinc has no UNPAIRED ELECTRONS in its d orbital and has a stable FULLY filled d orbital. Hence, due to the absence of unpaired electrons in Zinc, it can show no specific colouration in its salts. All salts and solutions of Zinc are always WHITE due to this fact.



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