Ammonium Bromide and Ionic Compounds

This video tutorial explains how to write the formula for ammonium bromide (NH4Br). It begins by identifying ammonium as a polyatomic ion with a positive charge and bromine as a single element with a negative charge. The tutorial demonstrates how these ions combine to form the ionic compound ammonium bromide, highlighting the cancellation of charges to achieve a net charge of zero. Additionally, it discusses the nature of ionic and covalent bonds within the compound.

What is the first step in writing the formula for ammonium bromide?

• Determine the elements in ammonium

• Look up ammonium as a polyatomic ion

• Identify the charge of bromine

• Find ammonium on the periodic table

What is the charge of the ammonium ion?

• 2-

• 1-

• 2+

• 1+

Which group does bromine belong to on the periodic table?

• Group 1

• Group 17

• Group 7

• Group 18

What is the charge of bromine when it forms an ion?

• 1+

• 2+

• 1-

• 2-

How do the charges of ammonium and bromide ions interact in ammonium bromide?

• They cancel each other out

• They form a metallic bond

• They repel each other

• They form a covalent bond

What type of compound is ammonium bromide?

• Ionic

• Molecular

• Covalent

• Metallic

What type of bond exists between hydrogen and nitrogen in the ammonium ion?

• Covalent bond

• Hydrogen bond

• Metallic bond

• Ionic bond

Why is ammonium bromide considered an ionic compound?

• It forms a covalent bond

• It consists of nonmetals only

• It has a net charge of zero

• It contains metals

What is the final formula for ammonium bromide?

• NH4Br2

• NH3Br

• NH4Br

• NH4Br3