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This correction details exercises focused on covalent compounds and their chemical formulas. It explores the formation of common compounds such as NaCl, Li2O, and MgF2, emphasizing the concept of shared electrons in covalent bonds. The exercises include identifying and correcting formulas while applying the rules of chemical bonding. This hands-on approach aims to reinforce the understanding of the composition and structure of various covalent substances, valuable for chemistry students and enthusiasts looking to grasp these fundamental concepts.
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Exercice -1 +1 + Cl Cl Na Na + NaCl O O -2 +1 + 2 Li Li + Li + Li2O
Exercice -1 +2 Mg + + 2 + O Ca MgF2 Mg F F F +2 -2 + O Ca + CaO
H et O (covalente= partage) H O H H2O
Br et Br (covalente= partage) Br Br Br2
H et F (covalente = partage) H F HF