Atomic Structure

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Atom, Building blocks of matter

Made up of Protons, neutrons and electrons.

Electron Configuration:

k shell, 1st shell, 2 electrons

L shell, 2nd Shell, 8 electrons

M shell,3rd shell,18 electrons

N shell, 4th shell, 32 electrons

O shell, 5th shell,50 electrons

Eg. Sodium 2,8,1

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Nuclear Notation

23 ---->mass number ( Protons and Neutrons)

Na ---->Symbol

11----> Atomic number ( Electrons/Protons)