Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name.
• KI
• Fe2O3
• (NH4)3PO4

Respuesta :

KI is the chemical formula of potassium iodide. KI is a white solid salt under room temperature and pressure. Fe2O3 is the chemical formula of iron (III) oxide is a red-brown solid that exists under normal conditions. (NH4)3PO4 is called ammonium phosphate. This is a really unstable salt with no commercial value.

Answer :

The name of compound [tex]KI[/tex] is, potassium iodide.

The name of compound [tex]Fe_2O_3[/tex] is, iron (III) oxide.

The name of compound [tex](NH_4)_3PO_4[/tex] is, ammonium phosphate.

Explanation :

Ionic compound : It is a type of compound that is made up of the ions of the two different elements in which one element is a metal and another element is a non-metal.

The rules of ionic compounds is given by:

  • Positive ion is written first.
  • The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
  • In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.

(1) The given compound [tex]KI[/tex] is an ionic compound. It is made up of two different ions which are potassium ion [tex](K^+)[/tex] and iodide ion [tex](I^-)[/tex].

So, the name of [tex]KI[/tex] is, potassium iodide.

(2) The given compound [tex]Fe_2O_3[/tex] is an ionic compound. It is made up of two different ions which are iron ion [tex](Fe^{3+})[/tex] and oxide ion [tex](O^{2-})[/tex].  In this an oxidation state of iron is (+3).

So, the name of [tex]Fe_2O_3[/tex] is, iron (III) oxide.

(3) The given compound [tex](NH_4)_3PO_4[/tex] is an ionic compound. It is made up of two different ions which are ammonium ion [tex](NH_4^+)[/tex] and phosphate ion [tex](PO_4^{3-})[/tex].

So, the name of [tex](NH_4)_3PO_4[/tex] is, ammonium phosphate.