Class 11ChemistryStructure of AtomDiscovery and Properties of anode, cathode rays neutron and Nuclear structure
MediumPositronium is the name given to an atom-like combination formed between
- A$A$. $A$ positron and a proton
- B$B$. $A$ positron and a neutron
- C$C$. $A$ positron and $\alpha$-particle
- D$D$. $A$ positron and an electron
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