Ionic Compounds and Valence Electrons

The video tutorial explains how to write the Lewis structure for lithium bromide (LiBr). It covers the concept of valence electrons, ionic bonding, and the transfer of electrons between lithium and bromine. The tutorial highlights the stability achieved through the octet rule and demonstrates the use of brackets in representing the Lewis structure. It concludes with an explanation of the formula unit and crystal structure of ionic compounds.

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

• Molecular compound

• Ionic compound

• Covalent compound

• Metallic compound

Which group on the periodic table does lithium belong to?

• Group 17

• Group 2

• Group 1

• Group 18

How many valence electrons does bromine have?

• 7

• 5

• 1

• 8

What happens to lithium's charge after it loses a valence electron?

• It becomes doubly charged

• It becomes negatively charged

• It remains neutral

• It becomes positively charged

What is the charge on bromine after it gains an electron?

• Neutral

• Negative

• Positive

• Double negative

Why is bromine considered stable after gaining an electron?

• It has a full outer shell

• It loses energy

• It becomes a metal

• It forms a covalent bond

What do brackets around bromine in the Lewis structure indicate?

• Shared electrons

• Double bond

• Transferred electrons

• No electrons

What is a formula unit in the context of ionic compounds?

• A metallic bond

• A covalent bond

• A repeating pattern of ions

• A single molecule

What is the structure called when many formula units are arranged in a pattern?

• Molecule

• Crystal

• Polymer

• Network

Who is the instructor in the video?

• Dr. A

• Dr. D

• Dr. C

• Dr. B