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CBSE Class 11-science Answered

Given C= -122 N= +31 O= -141 Cl= -328 Arrange them in the decreasing order of their electron gain enthalpy
Asked by Mudita Agrawal | 12 Sep, 2013, 10:08: PM
Expert Answer
By gaining 1 electron, Cl completes its octet (that is, becomes very stable). So its elctron gain enthalpy is the highest followed by oxygen. However, N aton has a half-filled 2p orbital. When it gains one electron, it becomes less stable as indicated by its +enthalpy. Decreasing order is Cl, O, C, N
Answered by | 15 Sep, 2013, 08:45: AM
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