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The incorrect electronic arrangment is...

The incorrect electronic arrangment is 

A

2,8,13,1

B

2,8,12,2

C

2,8,8,1

D

2,8,8,2

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-ATOMIC STRUCTURE-Level - I (EAMCET) (Exercise - V (Electronic configuration , Aufbau principle, Pauli.s Exclusion principle and Hund.s rule ))
  1. The configuration 1s^(2)2s^(2)2p^(5)3s^(1) shows

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  2. The incorrect electronic arrangment is

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  3. Given this set of quantum numbers for a multi electron atom 2, 0, 0, a...

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  4. Which one of the following pairs of atoms/ions have identical ground s...

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  5. How many 'd' electrons are present in Cr^(2+) ion?

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  6. The atomic nụmber of the element with the maximum number of unpaired 2...

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  7. The total number of electrons present in all the 's' orbitals, all the...

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  8. Which atom has as many 's' electrons as P-electrons

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  9. An element has 2 electrons in its K-shell. 8 electrons in L-shell, 13 ...

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  10. The electronic configuration 1s^(2)2s^(2)2p^(6)3s^(1)3p^(3)3d^(2) repr...

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  11. The atomic number of an element 'M' is 26. How many electrons are pres...

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  12. Consider the ground state of Cr atom (Z = 24). The numbers of electron...

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  13. Which is the first element to have 4d-electron in its electronic confi...

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  14. In the ground state, an element has 13 electrons in its "M - shell". T...

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  15. (A) : The electronic configuration of Cr is [Ar]3d^(5) 4s^(1) but not ...

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  16. The electrons identified by quantum numbers n and l are I) n = 4, l...

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  17. (A) : Fe^(3+) (g) is more stable than Fe^(2+) (g) (R) : Fe^(3+) (g) ...

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  18. In which of the following Aufbau principle is violated?

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  19. Which of the following electronic configuration is not possible?

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  20. The configuration 1s^(2)2s^(2)2p^(5)3s^(1) shows

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