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Which of the following is not chemical t...

Which of the following is not chemical twin?

A

Mo-W

B

Nb-Mo

C

Nb-Ta

D

Zr-Hf

Text Solution

Verified by Experts

The correct Answer is:
B
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KUMAR PRAKASHAN-THE D-AND F-BLOCK ELMENTS-Section -E (Multiple Choice Question (MCQs))
  1. Which of the trivalent ions is colourless?

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  2. Calculate magnetic moment of Fe^(+3) ions. (Fe= 26)

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  3. Calculate spin magnetic momentum of M((aq))^(+2) ions. (Z=26)

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  4. Calculate spin magnetic momentum of M((aq))^(+2) ions. (Z=27)

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  5. Which of the following is lanthenoid element?

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  6. Which of the following does not show different oxidation state?

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  7. When KOH solution is added to the potassum dicromate solution, then so...

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  8. State of oxidation number of Mn in KMnO(4)

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  9. Which of the following is not chemical twin?

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  10. Which of the following ion has maximum unpaired electron?

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  11. Which of the following lanthanoid has smallest atomic radius?

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  12. If certain atom has atomic number of 22. Then what is the maximum oxid...

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  13. Which of the following transitional element is found abudently?

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  14. Certain element has electronic configuration of [Xe] 4f^(14) 5d^(1) 6s...

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  15. If in a certain element contain one electron in sub shell of 5d-orbita...

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  16. What is the structure of chromate ion?

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  17. Which of the following ion has highest ionic radius?

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  18. Which of the following is strongest base?

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  19. State the chemical formula of pyrolusite

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  20. Which oxidation state of manganize is unstable ?

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