BIOL 11100 Lecture Notes - Lecture 6: Iron-56, Electronvolt, Neutron Capture
12 Apr 2016
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Band of stability: use n/p raio to determine beta- and beta+ decay or electron capture; atomic number > Mass of nuclide not equal to the sum of the masses of individual nucleons in the nuclide. Produced when mass m converted into energy/consumed when energy is converted to mass. M= mass in kg (1 amu= 1. 6605 x 10^-27kg) Nuclear binding energy energy required to separate nucleus of atom into protons and nuetrons. Nuclear binding energy: the energy required to convert a nucleus to protons and neutrons. Nbe is usually expressed in ev or mev. 1ev=1. 602 x 10^-19 j; 1 mev = 1. 602* 10^-13. Binding energy/nucleon is also a guide to the type of nuclear reacions nuclei will undergo. Atomic mass <56 nuclei fuse together and form heavier nuclei. Atomic mass>56 nuclei split (ission) into lighter nucleus. Fission: producion of lighter nuclei by the decomposiion of a heavier nucleus.
