Radioactive age dating

09-Jun-2019 13:43

Alpha decay is usually restricted to the heavier elements in the periodic table.

(Only a handful of nuclides with atomic numbers less than 83 emit an -particle.) The product of -decay is easy to predict if we assume that both mass and charge are conserved in nuclear reactions.

This calculation helps us understand the fascination of nuclear reactions.

The energy released when natural gas is burned is about 800 k J/mol.

A graph of the number of neutrons versus the number of protons for all stable naturally occurring nuclei.

Neutron-poor nuclides decay by modes that convert a proton into a neutron.The mass defect of an atom reflects the stability of the nucleus.It is equal to the energy released when the nucleus is formed from its protons and neutrons.A more useful quantity is obtained by dividing the binding energy for a nuclide by the total number of protons and neutrons it contains.This quantity is known as the binding energy per nucleon.

Neutron-poor nuclides decay by modes that convert a proton into a neutron.The mass defect of an atom reflects the stability of the nucleus.It is equal to the energy released when the nucleus is formed from its protons and neutrons.A more useful quantity is obtained by dividing the binding energy for a nuclide by the total number of protons and neutrons it contains.This quantity is known as the binding energy per nucleon.The synthesis of a mole of helium releases 3.4 million times as much energy.