Soru
Exercise Write the formula of ionic compounds containing the ions of: a) Calcium and oxygen b) Lithium and sulfur c) Aluminum and oxygen d) Barium and iodine
Çözüm
4.4
(304 Oylar)
Banu
Profesyonel · 6 yıl öğretmeni
Uzman doğrulaması
Cevap
a) The formula for the ionic compound containing calcium and oxygen is CaO. Calcium has a charge of +2 (Ca^2+) and oxygen has a charge of -2 (O^2-). When these ions combine, they form a neutral compound with the formula CaO.b) The formula for the ionic compound containing lithium and sulfur is Li2S. Lithium has a charge of +1 (Li^+) and sulfur has a charge of -2 (S^2-). To balance the charges, two lithium ions are needed for every sulfur ion, resulting in the formula Li2S.c) The formula for the ionic compound containing aluminum and oxygen is Al2O3. Aluminum has a charge of +3 (Al^3+) and oxygen has a charge of -2 (O^2-). To balance the charges, two aluminum ions are needed for every three oxygen ions, resulting in the formula Al2O3.d) The formula for the ionic compound containing barium and iodine is BaI2. Barium has a charge of +2 (Ba^2+) and iodine has a charge of -1 (I^-). To balance the charges, one barium ion is needed for every two iodine ions, resulting in the formula BaI2.