• call
  • chat
  • call
Header Add 1

Header Add 1

Rev. Notes > IGCSE > The Nuclear Atom
Previous Topic The Nuclear Atom Next Topic

The structure of an atom Rutherford's atomic model The nucleus
The proton number The nucleon number

The proton number

Atomic number or charge number of an element is defined as the numbers of electrons revolving round the nucleus in a neutral atom, which is the same as the number of protons present in the nucleus of neutral atom.


Z = Number of protons in the nucleus


Z = Number of electrons in a neutral atom




Add Comment | FAQs | Report Error | | | Share on Twitter
View Comments on this Chapter - Total Comments (1)
Diaf Said :
Very good notes
------------------------------------------------------------------------------------- Admin Replied:


  10/01/12 11:50 AM


footer 1

Footer Add 1

    Footer Add 2

Signup for our Newsletter

About us:

A team of committed professionals providing free online resources of physics for the learners of IGCSE/AS/ A Level .....