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 Form 2 Chemistry Online Lessons: Atomic structure and the periodic table

The sub-atomic particles of an atom

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Answer Text:
The sub-atomic particles of an atom.
- Are generally three:
-Protons;
-Neutrons;
-Electrons ;
1. Protons.
- Are the positively charged sub-atomic particles;
- Are found in the nucleus and thus form part of the nucleons;
- The number of protons in the nucleus is equal to the
number of electrons in the energy levels;
2. Neutrons.
- Are neutrally charged sub-atomic particles found in the nucleus of the atom;
- They are thought to probably prevent the positively charged protons from getting too close to each other;
3. Electrons.
- Are negatively charged sub-atomic particles found in the energy levels;
- The number of electrons in the energy levels is equal to the number of protons in the nucleus;
- This makes the atom to be electrically neutral;


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