Potassium argon and argon argon dating techniques are used on
- Uranium-Lead method - Rubidium-Strontium method - Carbon-14 method – also known as carbon dating.
The half-life of carbon-14 is only 5, 730 years so this method is mainly used for dating things from the last 50,000 years Here's how it works.
By far the most common isotope of potassium has only 20 neutrons.
The result is that potassium has a lower atomic mass (or atomic weight) than argon, despite having the extra proton.
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