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Bond Order and Enthalpy

A positron an...

Question

A positron and an electron come close together to give a neutral one called

A

Electronium

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B

Positronium

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C

γ

-photon

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D

β

-particle

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Solution

The correct option is C Positronium
Electron and positron orbiting around their common center of mass.
This bound quantum state is known as Positronium.

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