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SUBHASH PUBLICATION-THE 'd' - AND 'f' - BLOCK ELEMENTS -Question and Answer
- Transition metals are very hard and have high melting and boiling poin...
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- d' block elements shows variable oxidation states Why.
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- Name a transition element which does not exhibit variable oxidation st...
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- Sc^(3+) ions are colourless where as V^(3+) ions are coloured. Give re...
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- Why Sc^(3+) salts are colourless whereas Cr^(3+) salts are coloured.
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- Why Ti^(4+) is colourless where as Cr^(3+) salts are coloured.
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- Name the electrode system which have positive E^(0) value in 3d series...
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- Give any two reasons for the formation of large number of complex comp...
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- Cu^(2+) ions are coloured but Zn^(2+) ions are colourless. Give reason...
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- Transition elements shows catalytic property. Give two reason.
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- What are interstitial compounds?
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- How is potassium dichromate prepared from chromite are ?
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- Show that chromates and dichromates are interconvertible.
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- Give the structure of chromate ion?
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- Give two example to show that potassium dichromate is an oxidising age...
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- How is potassium permanganate manufactured from MnO(2) (pyrolusite)?
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- Name a compound which is isostructural with KMnO(4).
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- What happens when potassium permanganate crystals are heated?
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- What is the shape of manganate and permanganate ions? Write structures...
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- What is the magnetic nature of manganate and permanganate ions.
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