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Because of lanthanoid contraction, which...

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)

A

Zr(40) and Hf(72)

B

Zr(40) and Ta(73)

C

Ti(22) and Zr(40)

D

Zr(40) and Nb(41)

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Magnetic moment of 5.92 B.M. is given by which of the following ion ...

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  2. Gadolinium belong to 4 f series (Z=64). Which of the following is its ...

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  3. Because of lanthanoid contraction, which of the following pairs of ele...

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  4. Which one of the following statement is correct when SO2 is passed thr...

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  5. The outer shell electronic configuration of Gd (Z = 64) is

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  6. Draw lewis dot structure of PH3

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  7. The correct order of ionic radii of Y^(3+), La^(3+), Eu^(3+) and Lu^(3...

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  8. Write ionic equation showing KMnO4 acting as an oxidising agent in aci...

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  9. Which of the following pairs of transition metal ion s are the stronge...

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  10. What is the maximum oxidation state shown by Manganese in its compound...

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  11. Write the coordination number of central atom in the following coordin...

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  12. The acidic, basic or amphoteric nature of Mn2O7, V2O5 and CrO are resp...

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  13. Among the following series of transition metal ions the one where all ...

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  14. Answer the following: Aqueous solution of Ti^(4+) is colourless, but a...

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  15. The oxidation state of chromium in the final product formed by the rea...

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  16. The spin only magnetic moment (in units of Bohr magneton) of Ni^(2+)...

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  17. What is the coordinate number of the central metal ions in the followi...

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  18. Draw lewis dot structure of SiCl4

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  19. In context of the lanthanoids, which of the following statement is not...

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  20. Iron exhibits +2 ang +3 oxidation States. Which of the following State...

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