Question

short answer i: name the following compounds. 16. (nh₄)₂so₄ 17. sf₆ 18. naoh 19. co₂ 20. fe(no₃)₂

Explanation:

1. For \((NH_4)_2SO_4\), \(NH_4^+\) is the ammonium ion and \(SO_4^{2 - }\) is the sulfate ion. So it is named based on the ions present.
2. \(SF_6\) is a covalent compound. For covalent compounds, we use prefixes. 'S' is sulfur and 'F' is fluorine. The prefix for 6 is 'hexa - '.
3. \(NaOH\) consists of \(Na^+\) (sodium ion) and \(OH^-\) (hydroxide ion).
4. \(CO_2\) is a covalent compound. 'C' is carbon and 'O' is oxygen. The prefix for 2 is 'di - '.
5. \(Fe(NO_3)_2\): \(NO_3^-\) is the nitrate ion. Iron (\(Fe\)) can have different oxidation states. Since the charge of \(NO_3^-\) is - 1 and there are 2 nitrate ions, the iron has a + 2 oxidation state. So we use the 'ferrous' (for + 2 iron) or iron (II) naming.

Answer:

1. Ammonium sulfate
2. Sulfur hexafluoride
3. Sodium hydroxide
4. Carbon dioxide
5. Iron (II) nitrate (or ferrous nitrate)