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Which of the following has maximum numbe...

Which of the following has maximum number of unpaired electrons ?

A

`Mg^(2+)`

B

`B^(3+)`

C

`V^(3+)`

D

`Fe^(2+)`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Assignment (Section -B)
  1. Ionic radii are

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  2. The first ionisation potential of Na,Mg,Al and Si are in the order

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  3. Which of the following has maximum number of unpaired electrons ?

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  4. Which of the following elements do not belong to the family indicated ...

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  5. If the atomic number of an element is 33, it will be placed in the per...

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  6. Which among the following elements has the highest value for third ion...

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  7. The screening effect of inner electrons of an atom can cause

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  8. The diagonal similarities are due to similar polarising powers for the...

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  9. Which of the following gradation in the properties is false, as we mov...

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  10. The increasing order of electron affinity values of O,S and Se is

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  11. The element which has highest II^(nd) I.E. ?

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  12. The element which has highest electron affinity ?

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  13. Electronegativity of an element is 1.0 on the Pauling scale. Its value...

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  14. Which of the following element has highest shielding constant ?

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  15. Which one of the following order is correct ?

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  16. Which one of the following oxides has highest acidic character ?

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  17. Electron gain enthalpy will be positive in

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  18. Enthalpy change in the following process is A+ e^(-) to A^(-) Delta H=...

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  19. Uub is the symbol for the element with atomic number-

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  20. An element has electronic configuration [Xe] 4f^(7), 5d^(1),6s^(2). It...

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