Half life in radiometric dating - GCSE PHYSICS - What is Half-life? - What is the Definition.


Potassium-40 found in your body at all times; half - life = billion years ; Uranium-235; half - life = 704 million years ; Uranium-238; half - life = billion years

The number of protons in the nucleus of an atom determines the element. For example, all carbon atoms have 6 protons, all atoms of nitrogen have 7 protons, and all oxygen atoms have 8 protons. The number of neutrons in the nucleus can vary in any given type of atom. So, a carbon atom might have six neutrons, or seven, or possibly eight—but it would always have six protons. An “isotope” is any of several different forms of an element, each having different numbers of neutrons. The illustration below shows the three isotopes of carbon.


Half life in radiometric dating

Half life in radiometric dating