I3- Ion Structure and Properties

The video tutorial explains the Lewis structure of the I3- ion, focusing on the number of lone pairs and bonding pairs. It describes the central iodine atom's lone pairs and their impact on the molecular geometry, resulting in a linear shape. The tutorial concludes with a recap of the bonding and lone pairs in I3-.

What is the significance of the brackets and negative sign in the Lewis structure of I3-?

• They show the molecule is an ion.

• They represent the number of atoms.

• They denote the molecular geometry.

• They indicate the molecule is neutral.

How many bonding pairs are present in the I3- ion?

• One pair

• Four pairs

• Two pairs

• Three pairs

What is the role of lone pairs in the I3- ion?

• They do not participate in bonding.

• They are shared between atoms.

• They form covalent bonds.

• They determine the charge of the ion.

How many lone pairs are around the central iodine atom in I3-?

• One lone pair

• Two lone pairs

• Four lone pairs

• Three lone pairs

What is the molecular geometry of the I3- ion?

• Linear

• Bent

• Trigonal planar

• Tetrahedral

How do lone pairs affect the molecular geometry of I3-?

• They change the geometry to trigonal planar.

• They attract the iodine atoms closer.

• They repel the iodine atoms, maintaining a linear shape.

• They have no effect on the geometry.

What is the total number of lone pairs in the entire I3- ion?

• Six lone pairs

• Twelve lone pairs

• Three lone pairs

• Nine lone pairs

Which of the following best describes the electron pairs between the atoms in I3-?

• They are ionic pairs.

• They are non-bonding pairs.

• They are bonding pairs.

• They are lone pairs.

What is the total number of bonding pairs in the I3- ion?

• One bonding pair

• Two bonding pairs

• Three bonding pairs

• Four bonding pairs

Why is it important to understand the lone pairs in the I3- ion?

• They change the ion's charge.

• They affect the molecular geometry.

• They influence the ion's reactivity.

• They determine the ion's color.