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प्रश्न
Reactivity of transition elements decreases almost regularly from Sc to Cu. Explain.
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उत्तर
Reactivity of an element is dependent on the value of ionization enthalpy. In moving from Sc, the first element to Cu, the ionization enthalpy increases regularly. Therefore, the reactivity decreases as we move from Sc to Cu.
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संबंधित प्रश्न
Account for the following:
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Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number
The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
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Maximum oxidation state is shown by ____________.
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| Column I (Catalyst) | Column II (Process) |
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| (ii) \[\ce{Cu2C12}\] | (b) Contact process |
| (iii) \[\ce{V2O5}\] | (c) Vegetable oil to ghee |
| (iv) Finely divided iron | (d) Sandmeyer reaction |
| (v) \[\ce{TiCl4 + Al (CH3)3}\] | (e) Haber's Process |
| (f) Decomposition of KCIO3 |
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Reason: Because \[\ce{Zr}\] and \[\ce{Hf}\] lie in the same group of the periodic table.
On the basis of the figure given below, answer the following questions:
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