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Transition elements show catalytic property. Give two reasons. |
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Answer» Solution :(a) (i) They show variable oxidation states (ii) Large surface area (iii) presence of incompletely FILLED or partially filled d-orbitals or vacant d-orbital (iv) Formation of intermediate compounds. (b) Zinc (ZN) or SCANDIUM (Sc) (a) Two reasons, because transition elements show catalytic property. (i) Presence of vacant d-orbitals. (ii) Ability to exhibit variable VALENCES. (b) Zinc (Zn) is the element of 3d-series that does not show variable valency (oxidation state) due to as electronic configuration. Electronic configuration of `Zn : [Ar] 3d^(10) 4s^(2)`. |
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