Zinc Bromide and Ionic Compounds

The video tutorial explains how to write the Lewis structure for zinc bromide (ZnBr2), an ionic compound. It describes the electron transfer from zinc, a metal, to bromine, a non-metal, resulting in the formation of ionic bonds. The tutorial details the valence electrons of zinc and bromine, the charges they acquire, and how these charges lead to the formation of ionic bonds. It also covers the representation of the Lewis structure with brackets and the concept of a formula unit, emphasizing that zinc bromide is typically found as a crystal composed of repeating formula units.

What type of compound is formed when zinc and bromine combine?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

In the formation of ZnBr2, what role does zinc play?

• It shares electrons with bromine.

• It transfers electrons to bromine.

• It does not interact with bromine.

• It gains electrons from bromine.

How many valence electrons does bromine have?

• Eight

• Five

• Seven

• Two

What charge does bromine acquire after gaining an electron?

• 2-

• 2+

• 1-

• 1+

What is the charge on zinc after it loses electrons?

• 2+

• 1+

• 2-

• 1-

What is the result of the attraction between positive and negative charges in ZnBr2?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Why are brackets used around the bromide ion in the Lewis structure?

• To highlight its color

• To indicate it is a molecule

• To show it is an ion

• To denote its size

What is a formula unit in the context of zinc bromide?

• A single molecule of ZnBr2

• A repeating unit in a crystal structure

• An isolated atom of zinc

• A pair of bromine atoms

How is zinc bromide typically found in nature?

• As individual molecules

• As a gas

• As a crystal made of repeating units

• As a liquid