الصيغة الكيميائية للجزيء رموز الذرات السنة الثانية 2 متوسط

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***65253;***65261;***65170;***65197;***65244; Carbone Carbon Carboneum C
***65253;***65268;***65184;***65204;***65244;***65 155; Oxygène Oxygen Oxygenium O
***65253;***65268;***65184;***65261;***65197;***65 193;***65268;***65259; Hydrogène Hydrogen Hydrogenium H
***65173;***65261;***65199;***65155; Azote Nitrogen Nitrogenium N
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؟
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***65249;***65261;***65268;***65204;***65247;***65 166;***65244; Calcium Calcium Calcium Ca
***65197;***65261;***65248;***65244; Chlore Chlorine Clromium Cl
***65249;***65261;***65197;***65244; Chrome Chromium Chromium Cr
***65197;***65261;***65248;***65235; Fluor Fluorine Florum F
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