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ATOMIC STRUCTURE

Particle

Mass

Charge

Proton

1

+1

Neutron

1

0

Electron

1/1836

-1

Chemistry Revision

Mass number (large number)

Atomic number (smaller number)

Atomic number shows how many protons there are in an atom (proton number)

The number of electrons found in the outer most shell of an atom is equal to the group which it is found in the periodic table.

ISOPTOPES

Atoms of the same element that have the same number of protons, but a different number of neutrons.

Isotopes have the same chemical properties

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