Changes

: '''Alpha particles''' may also be referred to as '''alpha radiation'''.

: '''Alpha particles''' are a [[Helium]] [[Atomic Nucleus|nucleus]].

: '''Alpha particles''' are [[emit]]ted when a [[Atomic Nucleus|nucleus]] is too large or the [[ratio]] of [[proton]]s to [[neutron]]s is too large.

: '''Alpha particles''' are [[emit]]ted rather than single [[proton]]s or [[neutron]]s because the [[Helium]] [[Atomic Nucleus|nucleus]] is extremely [[Stable Isotope|stable]].

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| style="height:20px; width:400px; text-align:center;" |Scientist were able to determine the [[Electrical Charge|charge]] and [[mass]] of [[Alpha Particle|alpha particle]] by sending it between two [[Electrical Charge|electrically charged]] plates and observing its path.

The '''alpha particle''' moves towards the [[Negative Charge|negative]] plate, so it must be [[Positive Charge|positively charged]]. The rate of curvature depends on the [[mass]]:[[Electrical Charge|charge]] [[ratio]] which indicates it has a [[Relative Atomic Mass|relative atomic mass]] of 4 and [[Relative Atomic Charge|relative charge]] of +2.

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