Isotopes - Summary - GCSE Physics
Channel: Kit Betts-Masters
Date: 2021-01-29

Isotopes of an element - atoms with the same number of protons but different numbers of neutrons.

pro-tip:  In Nuclear Physics we are only really concerned with the nucleus of the atom.   All the ideas about formation of positive ions and electronic configuration is only important for chemistry.  

The word “atom” implies that we are talking about a particle with no overall charge.  In other words an atom is neutral as it has the same number of protons and electrons. 
 Radioactive particles can ionise atoms, in which case the atoms can lose electrons.  This will leave behind a positive ion.




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