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SHARAM PUBLICATION-D AND F BLOCK ELEMENTS-EXERCISE
- What are alloys ? Name two alloys.
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- Cu^+ is diamagnetic , but Cu^2+ is paramagnetic . Why ?
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- Why do transitional elements form complex compounds ?
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- Why are the salts of Zn, Cd and Hg are colourless.
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- Why Fe^2+ forms Fe^3+, but Mn^2+ does not form Mn^3+
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- Why do transition metal ions have high enthalpy of hydration ?
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- Why the properties of third transition series are very similar to seco...
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- How would you account for the fact that the transition metals and thei...
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- Scandium forms no coloured ions, yet it is regarded as a transition el...
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- The paramagnetic character in 3d- transition series increases up to ma...
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- Explain why Zn shows only +2 oxidation state ?
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- Manganese exhibits highest oxidation state of +7. Give reason.
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- Explain, why Cu^+ ion is not stable in aqueous solution.
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- Why does copper not displace hydrogen from acids ?
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- Reactivity of transition elements decreases almost regularly from Sc t...
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- An ion has three unpaired electrons . Calculate its magnetic moment.
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- Explain, why Cu^+ ion is not stable in aqueous solution.
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- Predict which of the following will be coloured In aqueous solution gi...
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- Why Zn^2+ salts are white while Ni^2+ and Cu^2+ salts are coloured ?
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- What is the basic difference between the electronic configuration of t...
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