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Binary ionic compounds are between a metal and nonmetal. This does not mean there are two atoms, but two types of atoms, so Al 2 S 3 is a binary ionic compound. The rules are simple, name the cation first and the anion second, giving the anion the -ide suffix. Cation (metal) first.
We use parentheses in a formula to indicate a group of atoms that behave as a unit. For example, the formula for calcium phosphate, one of the minerals in our bones, is Ca 3 (PO 4) 2. This formula indicates that there are three calcium ions (Ca 2+) for every two phosphate (PO 4 3−) (PO 4 3−) groups.
Germanium compounds are chemical compounds formed by the element germanium (Ge). Germanium is insoluble in dilute acids and alkalis but dissolves slowly in hot concentrated sulfuric and nitric acids and reacts violently with molten alkalis to produce germanates ([GeO3]2−).
A chemical formula is a concise list of the elements in a compound and the ratios of these elements. To better understand what a chemical formula means, we must consider how an ionic compound is constructed from its ions.
We use parentheses in a formula to indicate a group of atoms that behave as a unit. For example, the formula for calcium phosphate, one of the minerals in our bones, is Ca 3 (PO 4) 2. This formula indicates that there are three calcium ions (Ca 2+) for every two phosphate (PO 4 3−) (PO 4 3−) groups.
25 wrz 2022 · Recognize polyatomic ions in chemical formulas. Ionic compounds do not exist as molecules. In the solid state, ionic compounds are in crystal lattice containing many ions each of the cation and anion. An ionic formula, like \ (\ce {NaCl}\), is an empirical formula.
2 wrz 2024 · germanium (Ge), a chemical element between silicon and tin in Group 14 (IVa) of the periodic table, a silvery-gray metalloid, intermediate in properties between the metals and the nonmetals.
