Answer Save. Cd is quite similar to Zn ion in this respect. HSAB theory useful a) Hard bases stabilize high oxidation states b) Soft bases stabilize low oxidation states +4, +5 and + 6, +7 due to small energy difference between 5f, 6d and 7s subshells. Identify the oxidation state of Cl in the following compounds: (3 points) Cl2 _____ HCl _____ ClO3– _____ Question 2: Redox Reactions (15 points) Use the equation below to answer the following questions. Furthermore, it is unlikely zinc will lose more than its 4s electrons because the 3d orbital is filled and quite stable. Since Zn have Configuration- [Ar]3d^104s2. Explain the following: (i) Tendency to show -2 oxidation state decreases from sulphur to polonium. Transition elements exhibit a wide variety of oxidation states in their compounds. With tin, the +4 state is still more stable than the +2, but by the time you get to lead, the +2 state is the more stable - and dominates the chemistry of lead. Dear friend, The oxidation state of an element is related to the number of electrons that an atom loses, gains, or appears to use when joining with another atom in compounds. Question 15. Specific coordination number and geometries depend on metal and number of d-electrons 4. Therefore, Ni can undergo d sp 3 If NH3 causes the pairing, then only one 3d orbital is empty. Click hereto get an answer to your question ️ Give reasons:(i) Mn shows the highest oxidation state of + 7 with oxygen but with fluorine it shows the highest oxidation state of + 4 . Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed. Zinc in the +1 oxidation state is $\text{[Ar]}3d^{10}4s^1$, and even in its highest, most common known oxidation state +2 (which the quoted values above seem to have forgotten) it's still $\text{[Ar]}3d^{10}$.No known zinc species in what we normally consider the realm of chemistry breaks that complete $3d^{10}$ subshell, and we would need a major revamp of our calculations and models … Zinc isn’t a transition metal as it contains a full d sub level in all of its oxidation states. They are not the ONLY oxidation states exhibited by iron metal. Many compounds with luster and electrical conductivity maintain a simple stoichiometric formula; such as the golden TiO, blue-black RuO 2 or coppery ReO 3, all of obvious oxidation state.Ultimately, however, the assignment of the free metallic electrons to one of the bonded atoms has its limits and leads to unusual oxidation states. (3) Name the element which shows only +3 oxidation state. Thus, it cannot undergo d2sp3 hybridization. Favorite Answer . …, te rabb khole.......yahi ishq di marzi hain.....yahi rab di marzi hain.....tere bin jeena kaisa....haan khudgarzi hai....., which of the following is more polar among other= ( H - ( ہر ہ دن. Oxidation involves an increase in oxidation number, while reduction involves a decrease in oxidation number. But without that copper cation (the oxidizing agent) present, nothing will happen. Oxidation and Reduction . Oxidation state shows the total number of electrons which have been removed from an element (a positive oxidation state) or added to an element (a negative oxidation state) to get to its present state. What is the most likely oxidation state of Cl (chlorine)? Scandium’s electron config is [Ar] 3p6 4s2 3d1 .It can't lose 2 electrons to form a positive ion because it can cause destabilization. Minimum oxidation state of these elements is +2 which is due to involvement of electrons of outer most orbit. 1 Answer. Thus the common oxidation state for both Zn and Cd is +2. Variable oxidation states may be understood rather better by a consideration of the electronic configurations of the states formed. Why zn shows only +2 oxidation state 2 See answers sushant2505 sushant2505 Zinc is more likely to lose its 4s electrons first, before dropping its 3d electrons. Scandium is one of the two elements in the first transition metal period which has only one oxidation state (zinc is the other, with an oxidation state of +2). Where as in case of zinc, it has 2 electrons in 4s and 10 electrons in 3d orbital, due to which it will show +2 oxidation state, but zn although has high value of hydration enthalpy, it has a very high value of THIRD ionisation enthalpy, which could not get overcome. Usually, the change in oxidation number is associated with a gain or loss of electrons, but there are some redox reactions (e.g., covalent bonding) that do not involve electron transfer. 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