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During the addition of second electron t...

During the addition of second electron to oxygen, energy is ..........

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The number of paired electrons in oxygen atom is :

Consider the hydrogen atom to be a proton embededded in a cavity of radius (Bohr radius) whose charge is neutralised by the addition of an electron to the cavity in a vacume innitially slowly .Extimate the average total energy of an electron in to ground state .Also if the magnitude iof the average kinetic energy is half of the magnitude of teh average energy ,find the average potential energy

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