Why do transition elements show variable oxidation states? The energy difference between these orbitals is very less, so both the energy levels can be used for bond formation. (Comptt. Their general electronic configuration is: where n is the outermost shell. For example: manganese shows all the oxidation states from +2 to +7 in its compounds. Transition elements are the elements which lie between 's' and 'p' block elements. i know that-arises from the similar energies required for removal of 4s and 3d electrons. (ii) Name the element which shows only +3 oxidation state. Delhi 2014) Answer: The variability of oxidation state of transition elements is due to incompletely filled d-orbitals and presence of unpaired electrons, i.e. Why do transition elements show variable oxidation states? (ns) and (n -1) d electrons have … These elements show variable oxidation state because their valence electrons in two different sets of orbitals, that is (n-1)d and ns. This oxidation state arises from the loss of two 4s electrons. The variable oxidation states shown by the transition elements are due to the participation of outer ns and inner (n–1)d-electrons in bonding. pH has an effect on the redox potential of the reduction of transition metal ions from higher to lower oxidation states. • maximum oxidation state rises across the group to manganese • maximum falls as the energy required to remove more electrons becomes very high • all (except scandium) have an M2+ ion (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). Oxidation state of an element is defined as the degree of oxidation (loss of electron) of the element in achemical compound. Oxidation states, (aka oxidation numbers), are numbers that show how many electrons the element would lose or gain if it were to bond to other atoms. Thus, transition elements have variable oxidation states. This is a table that shows each element's outermost electron shell configuration. Solution for (a) Why do transition elements show variable oxidation states? Transition elements exhibit a wide variety of oxidation states in their compounds. These elements show variable oxidation state because their valence electrons in two different sets of orbitals, that is (n-1)d and ns. Properties All transition metals except Sc are capable of bivalency. (i) Name the element showing maximum number of oxidation states among the first… The transition elements have outer electrons that occupy a very large shell. Manganate (VII) ions, MnO₄⁻, are strong oxidising agents in acidic solution but a weaker oxidising agent in alkaline solution. There is a great variety of oxidation states but patterns can be found. Why do transition metals have variable oxidation states? Except scandium, the most common oxidation state shown by the elements of first transition series is +2. 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