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ASSAM ACADEMIC CENTRE-The d and f-block elements-Example
- Why is copper sulphate pentahydrate coloured?
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- Give reasons: Why is HCl not used to acidify a permanganate solution i...
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- What are lanthanoids?
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- Write the highest oxidation state exhibited by chromium (Z = 24).
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- What is the most stable oxidation state of manganese (Z = 25)?
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- Name the first element of the 3d transition metal series.
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- Write the highest oxidation state of element with atomic number 23.
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- Name the tripositive metal ion represented by the configuration 1s^2 2...
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- Give reasons: Name one ore each of the manganese and chromium.
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- What are interstitial compounds? Mention principla physical and chemic...
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- Which compound of thorium is used in making incandescent gas lamp mant...
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- Give reason: among transition metals, the highest oxidation state is e...
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- Why is that an orange solution of K2Cr2O7 turns yellow on adding NaOH ...
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- Name a transition metal which does not exhibit variation in oxidation ...
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- Write all possible oxidation states of an element having atomic number...
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- Write electronic configuration of Cr(24)
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- Zn^(2+) salts are colourless while Cu^(2+) salts are coloured. Give re...
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- How would you account for the following? Zn, Cd and Hg are normally no...
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- Why do transition elements show variable oxidation state?
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- Write formula of a compound where the transition metal is in +7 oxidat...
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