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Electronic configuration of most elect...

Electronic configuration of most electronegative element is

A

`1 s^(2) 2 s^(2) 2 p^(6) 3 s^(1)`

B

` 1 s^(2) 2 s^(2) 2p^(6) 3s^(2) 3p^(5)`

C

`1 s^(2) 2s^(2) 2p^(5)`

D

`1 s^(2) 2 s^(2) 2p^(6) 3s^(2) 3p^(6)`

Text Solution

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The correct Answer is:
C
`F (1 s^(2) 2s^(2) 2p^(5))` is the most electronegative element.
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The outermost electronic configuration of the most electronegative element is

The outermost electronic configuration of the most electronegative element is

The properties of the elements (atomic/ionic radii, electron gain enthalpy, ionization enthalpy, electronegativity, valence, oxidising/reducing power, acid/base character, etc.) which are directly or indirectly related to their electronic configirations are called periodic properties. These properties show a regular gradation on moving from left to right in a period or form top to bottom in a group. Down a group, the atomic/ionic radii, metallic character and reducing character increase while ionization enthalpy and electronegativity decrease. Along a period from left to right, atomic/ionic and metallic character decrease while ionization enthaloy, electronegativity, non-metallic character and oxiding power increase. However, electron gain enthalpy becomes less negative down a group butmore negative along a period. In contrast, inert gases have positive electron gain enthalpies which do not show may regular trend. The outermost electronic configuration of the most electronegative elements is:

The outermost electronic configuration of most electropositive element is

PRADEEP-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -Competition Focus (Jee Main and Advanced / Medical Entrance ) ( Multiple Choice Question I )
  1. Which of the following represents the correct order of increasing elec...

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  2. The order of decreasing negative electron gain enthalpy of O. S...

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  3. the correct order of electron gain enthalpy with negative sign of F,Cl...

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  4. Which of the following atom should have the highest negative first ele...

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  5. The element with positive electron gain enthalpy is

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  6. Which of the following species has the highest electron affinit...

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  7. The highest electron affinity is shown by

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  8. The electronegativity of the following elements increases in the orde...

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  9. The correct order of electronegativities of N,O, F and P is

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  10. Which of the configuration of most electronegative elements is

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  11. Electronic configuration of most electronegative element is

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  12. Among Me(3)N, C(5)H(5)N and Me CN (Me= methyl group) , the electro...

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  13. Considering the elements B, Al, Mg and K, the correct order of their m...

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  14. The electronic configuration of two elements X and Y are given below: ...

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  15. In the periodic table, the basic character of oxides

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  16. The first ionisation potential of Li is 5.4 e V and the electron affi...

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  17. Which of the following remains unchanged in descending in a group in t...

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  18. Point out the wrong statement In a given period of the periodic tabl...

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  19. Following statements regarding the periodic trends of chemical reactiv...

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  20. Aqueous solution of two compounds M(1) - O - H and M(2) - O - H are pr...

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