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- Help me understand! - When the first electron gain enthalpyof oxygen is -141kJ/mol , its second electron gain enthalpy i - Classification of Elements and Periodic table - JEE Main
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When the first electron gain enthalpy of oxygen is -141kJ/mol , its second electron gain enthalpy is :
- Option 1)
A more negative value than the first .
- Option 2)
Almost the same as that of the first .
- Option 3)
Negative , but less negative than the first .
- Option 4)
A positive value .
Answers (1)
Electron gain enthalpy -
When an electron is added to a neutral gaseous atom (x) to convert it into a negative ion, the enthalpy change accompanying the process is defined as the electron gain enthalpy
- wherein
The second electron gain ethalpy is always positive for elements.
Variation of electron gain enthalpy with electronic configuration -
Elements with half or full filled orbitals are more stable.Energy is required to add an electron since they do not accept electron easily.
- wherein
have high positive value.
Option 1)
A more negative value than the first .
Option 2)Almost the same as that of the first .
Option 3)Negative , but less negative than the first .
Option 4)A positive value .
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