Electron Configuration and Phosphide Ion

The video tutorial explains how to write the electron configuration for the phosphide ion (P3-). It begins with the electron configuration of neutral phosphorus, highlighting that the atomic number equals the number of protons and electrons. The tutorial then details the step-by-step process of writing the electron configuration using orbital blocks. It further explains how the phosphide ion gains three electrons, resulting in a stable configuration similar to the noble gas argon. The video concludes by emphasizing the importance of valence electrons in achieving stability.

What is the main focus of the video tutorial?

• Writing the electron configuration for the phosphide ion

• Understanding the periodic table

• Learning about chemical reactions

• Studying the properties of noble gases

Why are elements on the periodic table considered neutral?

• They have a stable electron configuration

• They have no charge

• They have equal numbers of protons and electrons

• They have equal numbers of protons and neutrons

How many electrons does neutral phosphorus have?

• 15

• 10

• 12

• 18

What is the electron configuration for the 1s orbital in phosphorus?

• 1s3

• 1s2

• 1s1

• 1s4

How many electrons are added to form the phosphide ion from neutral phosphorus?

• 1

• 2

• 4

• 3

What is the electron configuration of the phosphide ion's 3p orbital?

• 3p3

• 3p4

• 3p5

• 3p6

What does a negative charge on an ion indicate?

• Loss of protons

• Gain of electrons

• Loss of electrons

• Gain of protons

How many valence electrons does the phosphide ion have?

• 7

• 6

• 9

• 8

What noble gas has the same electron configuration as the phosphide ion?

• Xenon

• Krypton

• Neon

• Argon

Why is the electron configuration of the phosphide ion considered stable?

• It has a full outer shell

• It has an equal number of protons and electrons

• It has fewer electrons than protons

• It has a positive charge