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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 are group 17 elements. Their general valence shell electronic configuartion is `ns^(2)np^(5)`. Halogens have tendency to take one eletron to acquire noble gas configuartion. They easily acquire one electron, because small amount of energy is released during this process.Therefore, halogens have high electron affinities.
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Halogens have maximum negative electron gain enthalpy in the respective periods the periodic table. Why?

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

Knowledge Check

  • The 3rd period of the periodic table contains

    A
    8 elements
    B
    32 elements
    C
    3 elements
    D
    18 elements

  • Electron gain enthalpy of noble gases is :

    A
    Negative
    B
    Positive
    C
    Zero
    D
    Zero or Positive.

  • Fluorine has less negative electron gain enthalpy than chlorine due to:

    A
    Small size
    B
    High electro negativity
    C
    Absence of d-orbital
    D
    None of the above

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