Given below are two statements.
Statement I The electron gain enthalpy of 
is more negative than that of 
.
Statement II Ionization enthalpy decreases in a group of periodic table.
In the light of the above statements, choose the most appropriate answer from the options given below.
Text Solution
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Statement I is false. The electron gain enthalpy of 
is less negative than that of 
due to its small size, which leads to increased electron-electron repulsion when an electron is added.
Statement II is true. Ionization enthalpy generally decreases down the group in the periodic table due to the increase in atomic size, which results in a weaker attraction between the nucleus and the outermost electrons.
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