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Which series of elements have nearly the...

Which series of elements have nearly the same atomic radii ?

A

F, Cl, Br, l

B

Na, K, Rb, Cs

C

Li, Be, B,C

D

Fe, Co, Ni, Cu

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The correct Answer is:
D
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MBD PUBLICATION-TRANSITION METALS (d-BLOCK ELEMENTS)-QUESTION BANK
  1. An alloy of Al. Ni and Co used in permanent magnets is :

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  2. Which is not ferromagnetic ?

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  3. Which series of elements have nearly the same atomic radii ?

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  4. Which of the following metals has been used in making boats because it...

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  5. Blue colour/ precipitate will be obtained when K4[Fe(CN)6] reacts with...

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  6. Densest transition element is :

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  7. Metallic bond is stronger in transition metals than alkali and alkalin...

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  8. K2Cr2O7 on strong heating gives :

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  9. The properties of Zr and Hf are similar because :

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  10. In general, the transition elements exhibit their highest oxidation st...

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  11. When intimate mixture of potassium dichromate and potassium chloride i...

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  12. Transition metals form compexes in their zero oxidation state. The ex...

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  13. Platinum black is :

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  14. When manganese dioxide is fused with KOH in air, it gives :

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  15. Which metal has the highest melting point ?

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  16. which has the lowest melting point ?

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  17. The equilibrium Cr2O7^(2-) + 2e iff 2CrO4^(2-)

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  18. Which of the following compounds is used as the satarting material for...

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  19. Which of the following belong to the actinide series of elements ?

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  20. The reaction MnO4^(-) + e^(-) rarr MnO4^(2-) takes place in :

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