galinoulilou galinoulilou

10-10-2022
Chemistry

contestada

Je suis guidé

a. Le numéro atomique de l'atome de calcium étant Z=20, indique combien cet atome possède de protons et d'électrons.

b. Comment l'ion calcium s'est-il formé à partir de l'atome de calcium ?

c. Déduis-en le nombre d'électrons présents dans l'ion calcium.

merci d'avance

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