Not all isotopes are stable

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Presentation transcript:

Not all isotopes are stable Stable isotopes have… 1:1 ratio of n0 to p+ (for elements <20) 1.5:1 ratio of n0 to p+ (for elements >20)

Radioisotopes- unstable nucleus – they are radioactive the nucleus of element emits subatomic particles and/or electromagnetic waves… by emitting these particles, nucleus changes into different element (it’s trying to become more stable)

Why is this a big deal?

These subatomic particles that are emitted were discovered around 1900 Alpha rays Beta rays Gamma rays

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Penetration & Shielding

Alpha Beta Gamma Symbol Sign Charge Penetrating Power

Radioactivity