Atomic Structure - Chemistry

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Structure of an atom

Atomic Structure

In the nucleus of the atom: 

  • Protons 
  • Neutrons 

In the shell: 

  • Electrons

The easiest way to remember what charge they carry is by knowing that: 

  • Protons = Positive
  • Neutrons = Neutral 

Therefore....

  • Electrons = Negative

Elements 

To remember:    

The automic number shows the number of protons and electrons. 

THESE ARE THE SAME. 

The mass number tells us how many protons and neutrons in an atom.       

Oxygen - Element         

The automic number for oxygen here is '8'.

(Usually…

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evierose8

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