CHAPTER 13
Nuclei
CHAPTER AT A GLANCE
Nucleus
The entire positive charge and nearly the entire mass of atom is concentrated in a very small space called nucleus of an atom.
- Nucleus is composed of two types of particles; positively charged particle protons and neutral particle neutrons.
- Radius of a nucleus is expressed as
, where 
is mass number and 
(range of nuclear size). - Atomic number is equal to the number of protons present inside while the atomic ...
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