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Date: 3-1-2017
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Date: 17-6-2019
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Date: 9-1-2017
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Naming ionic compounds
When you name inorganic compounds, you write the name of the metal first and then the nonmetal, adding an -ide ending to the nonmetal (for compounds involving monatomic ions). Suppose, for example, that you want to name Li2S, the compound that results from the reaction of lithium and sulfur. You first write the name of the metal, lithium, and then write the name of the nonmetal, adding an -ide ending so that sulfur becomes sulfide:
Li2S: Lithium sulfide
Ionic compounds involving polyatomic ions follow the same basic rule: Write the name of the metal first, and then simply add the name of the nonmetal. However, with polyatomic anions, it’s not necessary to add the -ide ending:
(NH4)2CO3: Ammonium carbonate
K3PO4: Potassium phosphate
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هل يمكن للدماغ البشري التنبؤ بالمستقبل أثناء النوم؟
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علماء: طول الأيام على الأرض يزداد بسبب النواة الداخلية
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قسم الشؤون الطبية: خطّة يوم عرفة وعيد الأضحى سارت بانسيابيةٍ عالية
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