Home › Bihar Board Class 12 (Science) › Chemistry › d- and f-Block Elements › Both Cr2+ and Mn3+ are d4, yet Cr2+ is reducing.…
Both Cr2+ and Mn3+ are d4, yet Cr2+ is reducing. What makes Cr2+ reducing?
ACr3+ has a d5 set
BCr3+ has half-filled t2g
CCr3+ has a full d set
DCr2+ has half-filled d
Answer & Solution
Correct answer: B. Cr3+ has half-filled t2g
Oxidation of Cr2+ gives d3 Cr3+, whose half-filled t2g level is especially stable.
Related questions
What is the general oxidation state shown by the actinoids?Which property is shared by all the actinoid elements?Colour of trivalent lanthanoid ions is attributed to what?Which statement about interstitial compounds such as TiC is correct?Which ore is fused with sodium carbonate to make sodium chromate?Which ore is used to prepare potassium permanganate?The name transition metals first referred to properties transitional between which blocks?Why are zirconium and hafnium found together in nature and hard to separate?