Given below are two statements.
Statement I Fluorine does not form polyhalide as it has low 
bond energy.
Statement II Chlorine has most negative electron gain enthalpy.
In the light of the above statements, choose the correct answer from the options given below.
Text Solution
Verified by ExpertsB
Fluorine does not form any polyhalide as other halogens because
(i) it has maximum ionic character.
(ii) it has low 
bond energy 
.
(iii) of the absence of 
-orbitals in the valence shell of fluorine.
(iv) It brings about maximum coordination number in other elements.
Hence, statement I is correct.
The negative electron gain enthalpy of fluorine is less than that of chlorine. It is due to small size of fluorine atom. As a result, there are strong interelectronic repulsions in the relatively small 
-orbitals of fluorine
and thus, the incoming electron does not experience much attraction.
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