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The atomic numbers of vandium (V). Chrom...

The atomic numbers of vandium `(V)`. Chromium `(Cr)`, manganese `(Mn)` and iron (Fe) respectively 23, 24,25 and 26. Which one of these may be expected to have the higher second ionization enthalpy ?

A

V

B

Cr

C

Mn

D

Fe

Text Solution

Verified by Experts

The correct Answer is:
B
The second ionization energies are
`V=1414 kJ//mol`, `Cr=1592 kJ//mol`,
`Mn= 1509 kJ//mol`, `Fe = 1561 kJ//mol`
Cr has the highest second ionization energy because the second electron is to be removed from the half filled 3d subshell.
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NARAYNA-D - BLOCK ELEMENTS-EXERCISE-2
  1. The atomic numbers of vandium (V). Chromium (Cr), manganese (Mn) and i...

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  2. Among the following, identify the species with an atom in +6 oxidation...

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  3. All the following species are strong oxidizing agents. Their strength ...

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  4. Which of the following statements (s) is (are) correct with reference ...

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  5. The brown ring complex compound is formulated as [Fe(H(2)O)(5)NO]SO(4)...

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  6. The stability of higher oxidation states on moving down the group in t...

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  7. In aqueous solutions Eu^(2+) acts as

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  8. Which of the following lanthanoids has highest tendency to form comple...

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  9. Choose the correct statement regarding bonding in FeCl(3) (I) It c...

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  10. Stability of an oxidation state depend on

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  11. The radius of La^(3+)(Z=57) is 106 pm. Which one of the following give...

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  12. Zr(Z=40) and Hf(Z=72) have similar atomic and ionic radii because of:

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  13. A blue colouration is not obtained when

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  14. Turnbull's blue is a .............

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  15. The colourless species is

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  16. What will the structure of CrO(5) in presence of pyridine ?

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  17. [Ti(H(2)O)(6)]^(3+) is purple in colour because it is complimentary co...

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  18. Number of electrons transferred in each case when KMnO(4) acts as an o...

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  19. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  20. KMnO(4) dissollution in concentration H(2)SO(4) results in explosion d...

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