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Which one of the following arrangements ...

Which one of the following arrangements represents the correct order of electron gain enthalpy of the given atomic species?

A

`Cl lt F lt S lt O`

B

`O lt S lt F lt Cl`

C

`S lt O lt Cl lt F`

D

`F lt Cl lt O lt S`

Text Solution

Verified by Experts

The correct Answer is:
B
Halogens have very high electron affinity. It may be rated that the electron affinity of fluorine is unexpectedly low `(lt Cl)`. This may perhaps be due to small size of F atom. The value of electron gain enthalpies for Cl, F, S and O are respectively 349, 333, 200 and 142 kJ/mol, hence correct order is `ClgtFgtSgtO`.
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Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

Knowledge Check

  • The correct order of electron gain enthalpy is

    A
    `SgtSegtTegtO`
    B
    `TegtSegtSgtO`
    C
    `OgtSgtSegtTe`
    D
    `SgtOgtSegtTe`

  • Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

    A
    `Cl lt F lt S lt O`
    B
    `O lt S lt F lt F lt Cl`
    C
    `S lt O lt Cl lt F`
    D
    `F lt Cl lt O lt S`

  • Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

    A
    `Cl lt F lt S lt O`
    B
    `O lt S lt F lt F lt Cl`
    C
    `S lt O lt Cl lt F`
    D
    `F lt Cl lt O lt S`

    • Similar Questions

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    Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

    Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

    Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

    Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

    The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron affinity of first electron affinity or electron gain enthalpy. The first electron affinity is given a negative sign as the addition of an electron to a neutral atom is an exoergic process. The addition of electron to A^(-) requires energy to overcome the force of repulsion. Thus, the second electron affinity is an endoergic process. The magnitude of electron affinity depends on a number of factors such as (i) atomic size (ii) effective nuclear charge (iii) screening effects (iv) half and fully filled orbitals and (v) shape of orbital. In general, electron affinity increase as the atomic radii decrease in a period. However, there are exceptions when the atoms have stable configuration. In a group, electron affinity decreases as the size increases. However, the members of 3rd period have somewhat higher values than the members in the 2nd period of the same subgroups. Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative spin) of the given atomic species?

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