Q.6.19 - An Introduction to General, Organic, and Biological Chemistry

Question

Write the symbols for the ions and the correct formula for the ionic compound formed by each of the following:

a. potassium and sulfur

b. sodium and nitrogen

c. aluminium and iodine

d. gallium and oxygen

Step-by-Step Solution

Answer

Part a. ${\mathrm{K}}^{+},{\mathrm{S}}^{2-}$,${\mathrm{K}}_2\mathrm{S}$

Part b. ${\mathrm{Na}}^{+},{\mathrm{N}}^{3-},{\mathrm{Na}}_3\mathrm{N}$

Part c. ${\mathrm{Al}}^{3+},{\mathrm{I}}^{-},{\mathrm{AlI}}_3$

Part d. ${\mathrm{Ga}}^{3+},{\mathrm{O}}^{2-},{\mathrm{Ga}}_2{\mathrm{O}}_3$

Part (a) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by potassium and sulfur.

Part (a) Step 2: Explanation

Symbols for the ions and the correct formula for the ionic compound formed 

potassium -${\mathrm{K}}^{+}$

sulfur - ${\mathrm{S}}^{2-}$

ionic compound  - ${\mathrm{K}}_2\mathrm{S}$

Part (b) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by sodium and nitrogen 

Part (b) Step 2: Explanation

Symbols for the ions and the correct formula for the ionic compound formed 

sodium - $N{a}^{+}$

nitrogen - $N^{3-}$

ionic compound - $N{a}_{3}N$

Part (c) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by aluminium and iodine.

Part (c) Step 2: Explanation

Symbols for the ions and the correct formula for the ionic compound formed 

aluminium - $A{l}^{3+}$

iodine - $I^{-}$

ionic compound - $Al{I}_3$

Part (d) Step 1: Given Information

The symbols for the ions and the correct formula for the ionic compound formed by gallium and oxygen.

Part (d) Step 2: Explanation

Symbols for the ions and the correct formula for the ionic compound formed 

gallium - $G{a}^{3+}$

oxygen - $O^{2-}$

ionic compound - $G{a}_2{O}_3$