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Which is the most common oxidation state...

Which is the most common oxidation state exhibited by lanthanoids ?

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PRADEEP-D- AND F-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. What are coinage metals ? Give example .

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  2. Write the formula of an oxo-anion of chromium (Cr) in which it shows t...

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  3. What happends when chromates are kept in acidic solution and dichromat...

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  4. Complete the following reaction : (NH(4))(2) Cr(2)O(7) overset("Heat...

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  5. Name one ore each of manganese and chromium.

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  6. What happens when KMnO(4) is heated with conc. H(2)SO(4) or acidified ...

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  7. 1-butyne on reaction with hot alkaline KMnO(4) gives:

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  8. Write ionic reaction for the reaction between MnO(4)^(-) ions and oxa...

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  9. Complete the following: 2MnO4^(-)(aq) + 5H2O2 (aq) to 2Mn^(2+) +...

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  10. Why KMnO(4) is used in cleaning surgical instruments in hospitals ?

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  11. What is the basic difference between the electronic configuration of t...

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  12. Write the electronic configuration of Gadolinium (Z=64) and its most s...

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  13. Which is the most common oxidation state exhibited by lanthanoids ?

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  14. What is meant by 'lanthanoid contraction'?

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  15. Why is the separation of lanthanide elements difficult?

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  16. Explain why lanthanoids are paramagnetic in nature ?

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  17. Write any two uses of pyrophoric alloys.

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  18. Give the general electronic configuration of actinides.

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  19. Write the electronic configuration of the element with atomic number 1...

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  20. What is the maximum oxidation state shown by actinides?

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