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The size of the trivalent cations in the...

The size of the trivalent cations in the lantlianide series decreases steadily as the atomic number increases. What is this known as?

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Lanthanide contraction.
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CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Short Answer Type
  1. In the transition series, starting from lanthanum La(Z=57), the next e...

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  2. Why does vanadium pentoxide act as a catalyst?

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  3. The size of the trivalent cations in the lantlianide series decreases ...

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  4. Give the general electronic configuration of actinides.

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  5. Write any two uses of pyrophoric alloys.

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

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  7. Name one ore each of manganese and chromium.

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  8. In the transition series with an increase in atomic number, the atomic...

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  9. What is the effect of increasing pH on K2Cr2O7 solution?

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

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  11. Why do transition elements show similarities along the horizontal peri...

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  12. Out of Al,Zn,Mg and Fe, which is the densest element?

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  13. Why do transition elements configuration of the element with atomic nu...

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  14. Explain why transition elements have manuy irregularties in their elec...

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  15. The paramagnetic character in 3d transition series elements increases ...

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  16. Scandium forms no coloured ions, yet it is regarded as a transition el...

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  17. Assertion : Hydrochloric acid is not used to acidify a KMnO(4) solutio...

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  18. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions in solution are good reducing a...

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  19. Why is the separation of lanthanide elements difficult?

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  20. The second ionisation enthalpies of both Cr and Cu are higher than tho...

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