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Fill up the gaps: The compoundis known a...

Fill up the gaps: The compound________is known as philosopher's wool.

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ASSAM ACADEMIC CENTRE-The d and f-block elements-Example
  1. What are transition elements? Give the general electronic configuratio...

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  2. Fill up the gaps: Uranium is an element ofseries.

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  3. Fill up the gaps: The compoundis known as philosopher's wool.

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  4. In the transition series with an increase in atomic number the atomic ...

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  5. Give reasons: Why is first ionization enthalpy of Cu is higher than th...

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  6. Why is the third ionization energy of manganese (at no 25) unexpectedl...

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  7. Name one ore of Manganese and Chromium.

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  8. Transition metel compounds are generally coloured. Why?

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  9. Give reasons: Why is HCl not used to acidify a permanganate solution i...

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  10. Why is copper sulphate pentahydrate coloured?

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  11. Why Zn, Cd and Hg are not regarded as transition element?

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  12. Write three general chracteristics of transition elements.

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  13. Why do transition elements show variable oxidation state?

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  14. What is spin only formula for calculation of magnetic moment? Calculat...

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  15. Write the method of preparation of potassium dichromate.

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  16. How potassium permanganate is prepared in the laboratory?

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  17. The electronic configuration of valence shell of Cr in the ground stat...

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  18. Both Cu and Zn have completely filled 3d atomic orbital. Cu is conside...

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  19. Cu, Ag and Au have completely filled d-orbitals yet they are regarded ...

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  20. In what way is the electronic configuration of the transition elements...

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