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Assertion electron gain enthalpy can be exothermic or endothermic?
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Assertion electron gain enthalpy can be exothermic or endothermic?
Electron Gain Enthalpy


Electron gain enthalpy is the energy released or absorbed when an atom or ion gains an electron. It can be exothermic or endothermic depending on various factors such as the size of the atom or ion, the electronic configuration, and the electronegativity.


Exothermic Electron Gain Enthalpy


An exothermic electron gain enthalpy occurs when an atom or ion gains an electron and releases energy in the form of heat or light. This is because the addition of an electron results in a more stable configuration for the atom or ion. Factors that contribute to an exothermic electron gain enthalpy include:



  • Small size of the atom or ion

  • High electronegativity of the atom or ion

  • The electronic configuration of the atom or ion is close to a noble gas configuration



Endothermic Electron Gain Enthalpy


An endothermic electron gain enthalpy occurs when an atom or ion gains an electron and absorbs energy from the surroundings. This is because the addition of an electron results in an unstable configuration for the atom or ion. Factors that contribute to an endothermic electron gain enthalpy include:



  • Large size of the atom or ion

  • Low electronegativity of the atom or ion

  • The electronic configuration of the atom or ion is far from a noble gas configuration



Conclusion


In conclusion, electron gain enthalpy can be exothermic or endothermic depending on various factors. It is an important concept in chemistry as it helps predict the behavior of atoms and ions in chemical reactions.
Community Answer
Assertion electron gain enthalpy can be exothermic or endothermic?
Assertion: Electron gain enthalpy can be exothermic or endothermic      Reason: Electron gain enthaply provides a measure of the ease with which an atom adds an electron to form anion.                                          The correct option is (B) both assertion and reason are true but reason is not the correct explanation of assertion.                                     As depending on the element , the process of adding an electron to the atom can be either endothermic or exothermic 
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Assertion electron gain enthalpy can be exothermic or endothermic?
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