Molecular Geometry of CH4

Dr. B explains the molecular geometry of methane (CH4) by first constructing its Lewis structure. Using the AXE method, he identifies the molecular geometry as tetrahedral, with a bond angle of 109.5 degrees and sp3 hybridization. The video concludes by noting that CH4 is a non-polar molecule due to its symmetrical shape.

What is the first step in determining the molecular geometry of CH4?

• Checking for polarity

• Measuring bond angles

• Drawing the Lewis structure

• Identifying the hybridization

In the AXE method, what does 'A' represent for CH4?

• The non-bonding electron pairs

• The central atom

• The number of bonds

• The type of hybridization

How many atoms are bonded to the central carbon atom in CH4?

• Four

• Five

• Three

• Two

What is the molecular geometry of CH4 according to the AXE method?

• Trigonal planar

• Bent

• Tetrahedral

• Linear

What is the bond angle in a tetrahedral molecule like CH4?

• 180 degrees

• 120 degrees

• 109.5 degrees

• 90 degrees

What type of hybridization is present in CH4?

• sp

• sp3

• sp2

• sp3d

Why is CH4 considered a non-polar molecule?

• Because it has a linear shape

• Due to the presence of lone pairs

• Due to its symmetrical tetrahedral shape

• Because it has polar bonds

Which of the following is NOT a characteristic of CH4?

• sp3 hybridization

• Non-polarity

• Presence of lone pairs

• Tetrahedral geometry

What can be determined about CH4 from its molecular geometry?

• Its boiling point

• Its color

• Its reactivity

• Its polarity