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Formation of O- from O is …

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Formation of O- from O is an exothermic reaction. Explain why?

    • Posted by Bhanvi Chauhan 4 years, 11 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Jai Adithya 4 years, 11 months ago

    Because it is a exothermic reaction

    0Thank You

    Yogita Ingle 4 years, 11 months ago

    Electron gain enthalphy for oxygen is negative because oxygen being  an electronegative atom can easily accept electron.

    But gaining one more electron to O2​ will mean much more stability,so it is be an exothermic reaction.This expectation is true if we consider a neutral species but as O− is  negligibely charged adding another negativelly charged species will be diffcult as the like charges will repel each other ,so in order to force the electronn to fuse with O− ion we supply energy in form of heat .This males it endothermic.

    1Thank You

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