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The aluminum ion has a 3+ charge, while the fluoride ion formed by fluorine has a 1− charge. Three fluorine 1− ions are needed to balance the 3+ charge on the aluminum ion. This combination is written as \(\ce{AlF3}\). Iron can form two possible ions, but the ion with a 3+ charge is specified here. The oxygen atom has a 2− charge as an ion.
11 Μαρ 2022 · Predict the charge of monatomic main group elements based on their group number. Write formulas for ionic compounds using monatomic and polyatomic ions by applying the principle of charge neutrality.
25 Σεπ 2022 · This section will teach you how to find the correct ratio of ions, so that you can write a correct formula. If you know the name of a binary ionic compound, you can write its chemical formula. Start by writing the metal ion with its charge, followed by the nonmetal ion with its charge.
Write the chemical formula for an ionic compound composed of each pair of ions. the sodium ion and the sulfur ion; the aluminum ion and the fluoride ion; the 3+ iron ion and the oxygen ion; Solution. To obtain a valence shell octet, sodium forms an ion with a 1+ charge, while the sulfur ion has a 2− charge.
Monatomic Ions. 1. What are monatomic ions? Monatomic ions are ions consisting of only one atom. 2. How is the ionic charge of a Group 1A, 2A, or 3A ion determined? The ionic charge is numerically equal to the group number. 3. How is the ionic charge of a Group 5A, 6A, or 7A ion determined?
Because some atoms will lose electrons and some atoms will gain electrons, there is no overall change in the number of electrons, but with the transfer of electrons the individual atoms acquire a nonzero electric charge. Those that lose electrons become positively charged, and those that gain electrons become negatively charged.
Learning Objectives. By the end of this section, you will be able to: Define ionic and molecular (covalent) compounds. Predict the type of compound formed from elements based on their location within the periodic table. Determine formulas for simple ionic compounds.
