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Two compounds of iron are jpven below. FeSO4 Fe2(SO4)3 (The oxidation state of sulfate radical is-2) a. Which of these compounds show +2 oxidation state for Fe? b. Which compounds has Fe3+ ion? c. Write the subshell electronic configuration of Fe3+ ion. d. Why do transition elements show variable oxidation states? |
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Answer» 1. a. FeSO4 b. Fe2(SO4)3 c. Fe3+ – 1s2 2s2 2p6 3s2 3p6 3d5 d. The energy difference between the outer most ‘s’ subshell and penultinate ‘d’ subshell is very small. Hence under suitable conditions, the electrons in ‘d’ subshell also take part in chemical reaction. |
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