Sulfate Ion Properties and Characteristics

The video tutorial explains how to determine the number of lone pairs in the sulfate ion (SO4 2-). It begins with an introduction to the sulfate ion and its Lewis structure. The tutorial highlights that sulfur can have more than eight valence electrons, making it an exception to the octet rule. It then discusses the absence of lone pairs on the central sulfur atom, as all its electrons are involved in bonding. The video further explains how to identify lone pairs on the oxygen atoms, noting that single-bonded oxygens have three lone pairs, while double-bonded oxygens have two. The tutorial concludes with a summary of the process for finding lone pairs in the sulfate ion.

What is the primary focus of the video regarding the sulfate ion?

• The charge of the sulfate ion

• The mass of the sulfate ion

• The color of the sulfate ion

• The number of lone pairs in the sulfate ion

Why can sulfur have more than eight valence electrons?

• Because it is a halogen

• Because it is a noble gas

• Because it is an exception to the octet rule

• Because it is a metal

How many lone pairs are present on the sulfur atom in the sulfate ion?

• Three

• None

• Two

• One

How many lone pairs does an oxygen atom with a single bond have in the sulfate ion?

• Two

• Three

• One

• Four

How many lone pairs does an oxygen atom with a double bond have in the sulfate ion?

• Three

• Two

• Four

• One

What is the total number of lone pairs on all oxygen atoms in the sulfate ion?

• Eight

• Ten

• Six

• Four

What is the charge of the sulfate ion?

• 2-

• 1-

• 4-

• 3-