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The outermost electronic configuration o...

The outermost electronic configuration of the most electronegative element is

A

`ns^(2) np^(3)`

B

`ns^(2) np^(4)`

C

`ns^(2) np^(5)`

D

`ns^(2) np^(6)`

Text Solution

Verified by Experts

The correct Answer is:
C
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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:

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Knowledge Check

  • 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:

    A
    `ns^(2)np^(3)`
    B
    `ns^(2)np^(4)`
    C
    `ns^(2)np^(5)`
    D
    `ns^(2)np^(6)`

  • The outermost electronic configuration of most electronegative element is

    A
    `ns^(2)np^(2)`
    B
    `ns^(2)np^(4)`
    C
    `ns^(2)np^(5)`
    D
    `ns^(2)np^(6)`

  • The electronic configuration of most electronegative element is

    A
    `1s^2,2s^22p^5`
    B
    `1s^2,2s^22p^4,3s^1`
    C
    `1s^2,2s^2 2p^5,3s^1 3p^1`
    D
    `1s^2,2s^2 2p^6,3s^2 3p^5`