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Halogens have maximum negative electron ...

Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why ?

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Halogens have smallest size and high effective nuclear charge. They readily accept one electron to acquire noble gas electronic configuration. So they have maximum electron gain enthalpy.
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Oxygen has less negative electron gain enthalpy than sulphur.

Predict the maximum number of valence electrons possible for atoms in the first period of the periodic table.

Knowledge Check

  • The correct order of negative electron gain enthalpy of the elements of oxygen family in the periodic table is :

    A
    `OgtSgtSe`
    B
    `SgtSegtO`
    C
    `SgtOgtSe`
    D
    `SegtOgtS`

  • Elements in the same group of the periodic table have the same

    A
    atomic number
    B
    number of electron shells
    C
    number of valence electrons
    D
    atomic mass

  • The second electron gain enthalpy of oxygen is

    A
    `-140.9kJ"mol"^(-1)`
    B
    `-200.7kJ"mol"^(-1)`
    C
    `+780kJ"mol"^(-1)`
    D
    0

    • Similar Questions

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    Give the general variation of electron gain enthalpies in the periodic table.

    Why Noble gases have zero electron gain enthalpy?

    The negative electron gain enthalpy values of halogens follows the order:

    The correct order of negative electron gain enthalpy among the following is

    The number of elements in the fifth period of periodic table is

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