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The ionisation enthalpy of sulphur is "1...

The ionisation enthalpy of sulphur is `"1014kJmol"^(-1)`. If its electronegativity is 2.4, what is its electron gain enthalpy? 

Text Solution

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In the scale, electronegativity (E.N) is given in terms of ionisation, enthalpy `(I_1)` and electron gain enthalpy `(E_1)` as
`E.N. = (I_1 + E_1)/(544)`
Substituting the values,
`2.4 - (1014 + E_1)/(544)`
Electron affinity `= E_1 = (544 xx 2.4) - 1014 = 290`
Electron gain enthalpy of sulphur = `- 290 kj mol^(-1)`
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