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Question

Ionisation of energy of\( F^-\) is 320 Mol\(^{-1}\)


A

(a)-320 KJ mol

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B

(b) -160 KJ mol

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C

(c)+320 KJ mol

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D

(d)160 KJ mol

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Solution

The correct option is A

(a)-320 KJ mol


Let's look at this equation.

F F + e ΔH = 320 kJ

F + e F

ΔH will be -320 kJ only

Second equation will represent electron gain enthalpy because an electron is added.

Therefore,

Electron gain enthalpy = -320kJ


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