Molecular Geometry of HCO3-

The video tutorial explains the molecular geometry of the bicarbonate ion (HCO3-) using the VSEPR theory. It describes how the central carbon atom is bonded to three oxygen atoms, resulting in a trigonal planar geometry with bond angles of approximately 120 degrees. The tutorial also introduces the AXE notation to determine molecular shapes and provides a 3D visualization of the HCO3- ion to illustrate its planar structure.

What is the central atom in the HCO3- molecule?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

According to the valence shell electron pair repulsion theory, how do the atoms around the central carbon in HCO3- arrange themselves?

• In a square planar shape

• In a tetrahedral shape

• In a trigonal planar shape

• In a straight line

What is the AXE notation for the HCO3- molecule?

• AX2

• AX5

• AX3

• AX4

How many atoms are bonded to the central carbon in HCO3-?

• Two

• Three

• Four

• Five

Are there any lone pairs on the central carbon atom in HCO3-?

• No, there are no lone pairs

• Yes, there are three lone pairs

• Yes, there are two lone pairs

• Yes, there is one lone pair

What is the bond angle in a trigonal planar geometry?

• 109.5 degrees

• 180 degrees

• 90 degrees

• 120 degrees

In the 3D visualization of HCO3-, what color represents the carbon atom?

• Red

• Black

• Blue

• White

What is the shape of the HCO3- molecule?

• Trigonal planar

• Bent

• Linear

• Tetrahedral

Which of the following is true about the HCO3- molecule?

• It has lone pairs on the central atom

• It is all in one plane

• It has a bond angle of 90 degrees

• It has a tetrahedral geometry

What is the significance of the AXE notation in determining molecular geometry?

• It helps identify the type of bonds

• It determines the number of atoms in a molecule

• It helps predict the molecular shape

• It identifies the central atom