Ionic Compounds and Potassium

The video tutorial explains how to write the formula for potassium bromide by identifying the elements involved, potassium (K) and bromine (Br), and their respective ionic charges. It highlights the importance of balancing these charges to achieve a net charge of zero, resulting in the formula KBr. The tutorial concludes with a summary of the process and the final formula.

Which element is represented by the symbol 'K'?

• Calcium

• Potassium

• Sodium

• Krypton

What type of compound is formed when a metal and a non-metal combine?

• Molecular

• Covalent

• Ionic

• Metallic

What is the ionic charge of potassium in potassium bromide?

• 1-

• 2+

• 1+

• 2-

Why must the charges in an ionic compound add up to zero?

• To make the compound magnetic

• To make the compound colorful

• To make the compound visible

• To make the compound stable

What is the correct formula for potassium bromide?

• K2Br2

• KBr2

• K2Br

• KBr