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|[[File:NeutronParticleChargeNeutronCharge.png|center|200px]]
| style="height:20px; width:400px; text-align:left;" |Scientist were able to determine the [[Electrical Charge|charge]] of a '''neutron''' by sending it between two [[Electrical Charge|electrically charged]] plates and observing its path.
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|[[File:NeutronPenetrationAir.png|center|200px]]
| style="height:20px; width:400px; text-align:left;" |'''[[Alpha Particle|Alpha particlesNeutron]] can travel s''' have a mean lifetime of around 5cm through [[air]] ([[STP]]) 15 minutes before [[colliding]] with and [[ionising]] [[atom]]s or [[molecule]]s.they decay, so
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|[[File:AlphaPenetrationNeutronPenetration.png|center|200px]]
| style="height:20px; width:400px; text-align:left;" |[[Alpha Particle|Alpha particles]] can be stopped by a thin sheet of paper.
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