Most cations and anions can combine to form solid compounds that are usually known as salts. Its older name is cupric chloride. An ionic compound is named first by its cation and then by its anion. The cation has the same name as its element. For example, NaF is also known as sodium fluoride. If either the cation or the anion was a polyatomic ion, the polyatomic ion name is used in the name of the overall compound.
The polyatomic ion name stays the same. For example, Ca NO 3 2 is called calcium nitrate. If you examine salt crystals with a magnifying glass, you can observe the regular cubic structure resulting from the crystal lattice. Salt crystals are hard, yet brittle -- it's easy to crush a crystal.
Although dissolved salt has a recognizable flavor, you don't smell solid salt because it has a low vapor pressure.
In contrast, sugar is a covalent compound. It has a lower melting point than salt. It dissolves in water, but doesn't dissociate into ions so its solution doesn't conduct electricity. Sugar forms crystals, but you can smell its sweetness because it has a relatively high vapor pressure. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads.
Create a personalised ads profile. Chemistry Ionic Bonds Ionic Compounds. David Drayer. Jul 8, Explanation: Generally ionic compounds are formed from metallic elements with low electronegativity with nonmetals that have a high electronegativity. Explanation: Metals, all metals, are electron-rich materials. Related questions Question 79c2f. Question cd Some studies have implicated increased sodium intake with high blood pressure; newer studies suggest that the link is questionable.
Skip to content Chapter 3. Atoms, Molecules, and Ions. Know how ions form. Learn the characteristic charges that ions have. Construct a proper formula for an ionic compound. Generate a proper name for an ionic compound. Problems Name each species. Anions are named using the stem of the element name with the suffix -ide added. This is the oxide anion. Because this species has no charge, it is an atom in its elemental form.
This is cobalt. We note from Table 3. This is the cobalt II cation. Test Yourself Name each species. Problems Write the proper ionic formula for each of the two given ions. This means we have to go to a least common multiple, which in this case will be six. Hence the proper ionic formula is Al 2 O 3. Test Yourself Write the proper ionic formulas for each of the two given ions.
Problems Name each ionic compound. The name of this ionic compound is aluminum fluoride. We know that cobalt can have more than one possible charge; we just need to determine what it is. Therefore, the proper name for this ionic compound is cobalt III oxide. Test Yourself Name each ionic compound.
Sc 2 O 3 AgCl Answers scandium oxide silver chloride. Problems Write the proper formula and give the proper name for each ionic compound formed between the two listed ions. Enclosing the formula for the ammonium ion in parentheses, we have NH 4 2 S.
Because the ions have the same magnitude of charge, we need only one of each to balance the charges. The formula is AlPO 4 , and the name of the compound is aluminum phosphate.
Neither charge is an exact multiple of the other, so we have to go to the least common multiple of 6. Test Yourself Write the proper formula and give the proper name for each ionic compound formed between the two listed ions. Figure 3. This particular label shows that there are 75 mg of sodium in one serving of this particular food item.
Ions form when atoms lose or gain electrons.
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