Chlorite Ion Geometry and Bonding

The video tutorial explores the molecular geometry of the chlorite ion (ClO2-). It begins with an introduction to the ion and its correct Lewis structure. The steric number is calculated by counting the electron domains around the central chlorine atom, which includes two oxygens and two lone pairs, resulting in a steric number of four. The presence of two lone pairs leads to a bent molecular geometry with bond angles slightly less than 109.5 degrees. The video further explains how lone pairs occupy more space, pushing hydrogen atoms closer and reducing bond angles. The tutorial concludes with a summary of the chlorite ion's geometry and bond angles.

What is the molecular geometry of the chlorite ion (ClO2-)?

• Linear

• Tetrahedral

• Bent

• Trigonal planar

What is the steric number of the chlorite ion (ClO2-)?

• 5

• 4

• 3

• 2

Which of the following best describes the electron domain geometry of ClO2-?

• Trigonal planar

• Octahedral

• Linear

• Tetrahedral

What is the significance of the steric number in molecular geometry?

• It helps predict the shape of the molecule

• It indicates the number of lone pairs

• It shows the number of resonance structures

• It determines the number of bonds

How many lone pairs are present on the central chlorine atom in ClO2-?

• 2

• 1

• 4

• 3

What effect do lone pairs have on the molecular geometry of ClO2-?

• They make the geometry linear

• They make the geometry trigonal planar

• They cause the geometry to be bent

• They have no effect

What is the approximate bond angle in the chlorite ion (ClO2-)?

• 109.5 degrees

• 90 degrees

• 180 degrees

• 120 degrees

Why is the bond angle in ClO2- less than 109.5 degrees?

• Due to resonance structures

• Due to the presence of double bonds

• Because of the large size of chlorine

• Because of the lone pairs pushing the atoms closer

What is the role of lone pairs in determining the shape of ClO2-?

• They increase the bond angle

• They decrease the bond angle

• They make the molecule symmetrical

• They have no role

Which of the following statements is true about the chlorite ion (ClO2-)?

• It has a tetrahedral shape

• It has a bent shape

• It has a trigonal planar shape

• It has a linear shape