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Which of the following pairs of ions hav...

Which of the following pairs of ions have the same electronic configuration

A

`Cr^(+3),Fe^(+3)`

B

`Fe^(+3),Mn^(+2)`

C

`Fe^(+3),Co^(+3)`

D

`Sc^(+3),Cr^(+3)`

Text Solution

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The correct Answer is:
B
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NARAYNA-PERIODIC TABLE -All Questions
  1. O^(2-) and Si^(4+) are isoelectronic ions. If the ionic radius of O^(2...

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  2. Which set represents isoelectronic species ?

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  3. Which of the following pairs of ions have the same electronic configur...

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  4. Which one of the following groups represent a collection of isolectron...

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  5. In a period, atom with smaller radius is

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  6. As number of protons is the nucleus increases, atomic radius gradually...

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  7. The Lanthanide contraction is responsible for the fact that

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  8. The increasing order of the atomic radius of Si,S, Na, Mg,Al is

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  9. Which of the following process refers to ionisation potential ?

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  10. The element with highest ionization potential is

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  11. In the long form of periodic table elements with low ionisation potent...

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  12. As atomic number of elements increases I.P. value of the elements of t...

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  13. The ionization potential values of an element are in the following ord...

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  14. Which of the following elements has the lowest ionization potential ?

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  15. The ionisation energy of nitrogen is more than that of oxygen because

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  16. The correct order of the second ionisation potential of carbon, nitrog...

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  17. The I(1) values of Li,Be and C are 5.4 eV//"atom", 9.32 eV//"atom" and...

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  18. The ionisation potential of "X" ion is equal to

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  19. The I(1) of potassium is 4.339 eV//"atom". The I(1) of sodium

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  20. The first ionization potentials of four consecutive elements present i...

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