Iodine and Iodide Ion Concepts

The video tutorial explains how to draw the Lewis structure for the iodide ion (I-). It begins by discussing iodine's position in the periodic table and its seven valence electrons. The tutorial then explains how the iodide ion gains an extra electron, resulting in a stable configuration with eight valence electrons. The video concludes by showing the completed Lewis structure for the iodide ion, including the use of brackets to indicate its charge.

Which group in the periodic table does iodine belong to?

• Group 17

• Group 1

• Group 18

• Group 7

How many valence electrons does a neutral iodine atom have?

• 8

• 7

• 5

• 6

What happens to the electron count when iodine becomes an iodide ion?

• It gains two electrons

• It remains the same

• It gains an electron

• It loses an electron

Why does the iodide ion have a negative charge?

• It loses a proton

• It gains a proton

• It gains an electron

• It loses an electron

How many valence electrons does the iodide ion have?

• 6

• 9

• 7

• 8

What is the purpose of adding brackets around the iodide ion in its Lewis structure?

• To differentiate it from other ions

• To indicate it is a molecule

• To highlight its valence electrons

• To show it is an ion