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प्रश्न
The elements of 3d transition series are given as:
Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn
Answer the following:
Which element is a strong reducing agent in +2 oxidation state and why?
अति संक्षिप्त उत्तर
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उत्तर
Cr, because Cr2+, which has [Ar] 3d4s0 configuration, tends to lose one more electron forming Cr3+ to attain the more stable half-filled tg(d3) configuration. This is proved by its negative reduction potential value.
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