Iodine and Iodide Ion Concepts

This video tutorial explains how to write the electron configuration for the iodide ion (I-). It begins by detailing the process for neutral iodine, emphasizing the use of the periodic table to determine the electron configuration. The tutorial then transitions to the iodide ion, explaining that the addition of an electron results in a 5p6 configuration. The video highlights the importance of understanding electron gain in ions and provides a clear step-by-step guide to writing electron configurations.

What is the first step in writing the electron configuration for the iodide ion?

• Write the electron configuration for neutral iodine.

• Calculate the number of protons in iodine.

• Find the atomic mass of iodine.

• Determine the number of neutrons in iodine.

How many electrons does neutral iodine have?

• 53

• 52

• 54

• 55

Which tool is suggested as better for understanding electron configurations?

• A scientific calculator

• A periodic table

• A molecular model kit

• A chemistry textbook

What is the electron configuration ending for neutral iodine?

• 6s2

• 4d10

• 5p6

• 5p5

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

• It loses an electron.

• It gains a proton.

• It gains an electron.

• It loses a proton.

What is the final electron configuration ending for the iodide ion?

• 5p5

• 4d10

• 6s2

• 5p6

How many protons does the iodide ion have?

• 54

• 52

• 53

• 55

What remains unchanged when iodine becomes an iodide ion?

• Number of electrons

• Number of protons

• Atomic mass

• Electron configuration

Why is iodine considered an ion when it becomes iodide?

• It loses a neutron.

• It loses a proton.

• It gains a positive charge.

• It gains a negative charge.

What is the significance of the superscript numbers in electron configurations?

• They represent the number of electrons in each subshell.

• They indicate the number of protons.

• They show the number of neutrons.

• They denote the atomic mass.