Les atomes

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Cortège

Charge negative (electron)

Noyau

Charge positive ( neutrons et protons)

Classification périodique

Chiffre haut = les nucléons (neutron+protons) Chiffre du bas = les protons Lettre = symbole de l'élément

Électron

Dans le cortège Charge negative Même nombre que les protons

Proton

Dans le noyau Charge positive Même nombre que les électrons

Neutron

Dans le noyau Charge neutre

Les particules

Electron,neutron,proton

Atome charge ?

Neutre


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