Class 11ChemistryStructure of AtomDiscovery and Properties of anode, cathode rays neutron and Nuclear structure
MediumWhen beryllium is bombarded with $\alpha$-particles,extremely penetrating radiations which cannot be deflected by electrical or magnetic field are given out. These are
- A$A$ beam of protons
- B$\alpha$-rays
- C$A$ beam of neutrons
- D$X$-rays
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