Respuesta :
The answer is- [tex]MgTe[/tex], [tex]RbNO_{2}[/tex], [tex]Al_{2}S_{3}[/tex]
Ionic compounds- They are formed between a metal and non-metal as a result of ionic forces between them.
What are the rule to write a name for ionic compound?
- Rules for naming simple ionic compounds.
1. Name the metal first by naming its core element.
2. Name the non-metal by its elemental name and ending in -ide.
3. Name the metals that can have different oxidation states, using Roman numerals to indicate the positive charge.
An example of Fe2+ is iron(II)
4. Name the polyatomic ions by their names.
- Now, CuI (s) has Copper (I) metal and Iodine non-metal, thus, the systematic name of this ionic compound is Copper (I) iodide.
- The formulas of such ionic compounds can also be written following their names.
- The chemical formulas of the given ionic compounds are-
Magnesium telluride- The ions are [tex]Mg^{2+}\ and\ Te^{2+}[/tex]. Thus, the ionic compound formed is [tex]MgTe[/tex]
Rubidium nitride - The nitrite ion is [tex]NO_{2}^{-}[/tex] and the formula of compound is [tex]RbNO_{2}[/tex].
Aluminium selenide- Aluminium ion is [tex]Al^{3+}[/tex] and the selenide ion is [tex]S^{2-}[/tex]
Thus, the ionic compound formed between them is [tex]Al_{2}S_{3}[/tex].
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