Magnesium Bromide and Ionic Compounds

The video tutorial explains how to write the formula for magnesium bromide using the periodic table. It identifies magnesium as a metal with a 2+ charge and bromine as a non-metal with a 1- charge, forming an ionic compound. The crisscross method is used to balance the charges, resulting in the formula MgBr2. The tutorial verifies the formula by ensuring the net charge is zero, confirming the correctness of the formula.

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

• Metallic compound

• Ionic compound

• Covalent compound

• Molecular compound

What is the charge of a magnesium ion?

• 2-

• 1+

• 2+

• 1-

What is the charge of a bromine ion?

• 1+

• 2+

• 1-

• 2-

Which method is used to balance the charges in an ionic compound?

• Cross-multiply method

• Crisscross method

• Substitution method

• Elimination method

What is the correct formula for magnesium bromide?

• MgBr

• Mg2Br

• MgBr2

• Mg2Br2

How do you verify that the formula for magnesium bromide is correct?

• By measuring the mass of the compound

• By ensuring the net charge is zero

• By checking the color of the compound

• By testing its solubility in water

What is the net charge of a correctly balanced ionic compound?

• Depends on the elements

• Zero

• Negative

• Positive

What is the result of multiplying the charge of bromine by the number of bromine ions in magnesium bromide?

• +2

• +1

• -2

• -1