Question

The chemical formula of potassium permanganate is _______

Answer 1

The chemical formula of potassium permanganate

Step 1: Write the two ions side by side

$\mathrm{K}{\mathrm{MnO}}_4$

Step 2: Write the valency of the anion and cation

$$\begin{gathered} \mathrm{K}{\mathrm{MnO}}_4 \\ 11 \end{gathered}$$

Step 3: Interchange the valencies

$$\begin{gathered} \mathrm{K}{\mathrm{MnO}}_4 \\ \swarrow \searrow \\ 11 \end{gathered}$$

Step 4:

${\mathrm{KMnO}}_4$

Therefore, the chemical formula of potassium permanganate is ${\mathrm{KMnO}}_4$.