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In first transition series, the melting ...

In first transition series, the melting point of Mn is low because

A

Due to `d^(10)` configuration, metallic bonds are strong

B

Due to `d ^(7)` configuration, metallic bonds are weak

C

Dur to `d^(5)` configuration, metallic bonds are weak

D

none of these

Text Solution

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The correct Answer is:
C
Due to `d^(5)` configuration, metalic bonds are weak. `d^(5)` orbital is half filled as a result 3d electrons are more tightly held by the nucleus and this reduces the de-localization of electrons resulting in weaker metallic bonding.
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NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
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  2. The density of Sc is

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  3. In first transition series, the melting point of Mn is low because

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  4. Of the ions Zn^(2), Ni^(2 +) and Cr^(3 +) [atomic number of Zn = 30, N...

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  5. Paramagnetism is exhibited by molecules which

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  6. Which one of the following is transition element ?

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  7. Which of the following is a colourless ion?

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  8. If a compund absorbs orange colour from the white light, then the obse...

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  9. The atomic radii of transition elements in a period are.

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  10. Which of the following d-block elements has d^(10) configuration ?

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  11. The ore cromite contsins FeO and

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  12. An atom with atomic number 21 belongs to the category of

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  13. The highest magnetic moments is shown by the transition metal ion wit...

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  14. Which of the following pair of ions have the same number of unpaired e...

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  15. A transition element X has a configuration [Ar] 3d^(4) in its + 3 oxi...

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  16. The maximum number of transition metal elements that can be accommodat...

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  17. The pair of atoms with anomalous (exceptional) electron congigurations

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  18. The transition metals possess strong binding jforce because of

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  19. Least paramagnetic property is shown by

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  20. Transition metals from

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