Chemistry - PERIODIC TABLE Question with Solution | TestHub

ChemistryPERIODIC TABLEElectron Affinity, ElectronegativityMedium2 minPYQ_2019

ChemistryMediumsingle choice

When the first electron gain enthalpy $(Δ H_{e g})$ of oxygen is $- 141 k J / m o l$ , its second electron gain enthalpy is:

Options:

Answer:

Solution:

Second electron gain enthalpy is always positive for every element because to overcome repulsion between an anion and electron, energy has to be supplied.

$O^{-} + e^{-} \to O^{- 2}; Δ H_{e g} = + v e$

Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Electron Affinity, Electronegativity

⏱ 2mℹ️ Source: PYQ_2019

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