Ionic Compounds and Manganese Oxide

The video tutorial explains how to write the formula for manganese III oxide. It begins by identifying manganese and oxygen on the periodic table and determining their charges. Manganese, a transition metal, has a 3+ charge, while oxygen, a non-metal, has a 2- charge. The tutorial demonstrates using the crisscross method to balance these charges and form the compound Mn2O3. The process is verified by ensuring the net charge is zero, confirming the correct formula for manganese III oxide.

What is the element symbol for manganese?

• Ma

• Mn

• Mg

• Mo

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

• Metallic

• Ionic

• Covalent

• Hydrogen

What is the ionic charge of manganese in manganese III oxide?

• 3+

• 2+

• 4+

• 1+

What is the charge of oxygen in ionic compounds?

• 2-

• 0

• 1-

• 3-

Which method is used to balance the charges in manganese III oxide?

• Substitution

• Crisscross

• Elimination

• Addition

How many oxygen atoms are needed to balance the charge in manganese III oxide?

• 3

• 2

• 1

• 4

How many manganese atoms are present in the formula Mn2O3?

• 2

• 4

• 1

• 3

What is the net charge of the compound Mn2O3?

• 2-

• 3+

• 1+

• 0

What is the final formula for manganese III oxide?

• MnO2

• Mn2O3

• Mn3O2

• MnO3