Home › CBSE Class 12 (Science) › Chemistry › Coordination Compounds › Ruby gets its colour from which ion in an alumin…
Ruby gets its colour from which ion in an aluminium oxide lattice?
AFe3+
BMn2+
CCo2+
DCr3+
Answer & Solution
Correct answer: D. Cr3+
Cr3+ replaces some Al3+ in Al2O3 and its d-d transitions give the red colour.
Related questions
Impure nickel can be purified by first converting it into which compound?Chlorophyll is a coordination compound of which metal?In extracting gold, which metal is added to the [Au(CN)2]- solution to separate gold?The M-C pi bond in a metal carbonyl forms by donation from a filled metal d orbital into wThe synergic effect in metal carbonyls results in what?Which carbonyl is trigonal bipyramidal?The colour of a complex is complementary to the colour that itWhy are low spin tetrahedral complexes rarely observed?