Electron Configuration and Sulfide Ion Concepts

The video tutorial explains how to write the electron configuration for the sulfide ion (S2-). It begins by detailing the electron configuration for neutral sulfur, using the periodic table to determine the number of electrons. The tutorial then shows how to adjust this configuration for the sulfide ion by adding two electrons, resulting in a stable configuration similar to the noble gas argon. The video emphasizes the stability of having eight valence electrons and explains the role of electron gain in forming ionic bonds.

What is the charge of elements as they appear on the periodic table?

• Variable

• Neutral

• Negative

• Positive

How many electrons does a neutral sulfur atom have?

• 18

• 20

• 16

• 14

Which orbital is filled first when writing the electron configuration for sulfur?

• 2s

• 2p

• 3s

• 1s

How many electrons can the 2p orbital hold?

• 8

• 6

• 4

• 2

What is the electron configuration for neutral sulfur after filling the 3s orbital?

• 1s2 2s2 2p6 3s2

• 1s2 2s2 2p4 3s2

• 1s2 2s2 2p6 3p2

• 1s2 2s2 2p6 3s1

What happens to the electron configuration when sulfur becomes a sulfide ion?

• It loses two electrons

• It gains two electrons

• It gains one electron

• It loses one electron

In which orbital are the additional electrons added for the sulfide ion?

• 2p

• 3p

• 2s

• 1s

How many valence electrons does the sulfide ion have?

• 6

• 7

• 8

• 9

Why is the sulfide ion considered stable?

• It has a full 3p orbital

• It has a full 2s orbital

• It has a full 2p orbital

• It has a full 1s orbital

Which noble gas has the same electron configuration as the sulfide ion?

• Neon

• Krypton

• Argon

• Xenon