Molecular Geometry and Bonding Concepts

The video tutorial covers molecular geometry, focusing on PH3, AsF5, and SeCl6. It explains the electron domain theory, hybridization, and molecular shapes such as trigonal pyramidal, trigonal bipyramidal, and octahedral. The tutorial also discusses bond angles and polarity, providing detailed instructions for drawing molecular structures and preparing for lab activities.

What is the central atom in the PH3 molecule?

• Hydrogen

• Phosphorus

• Oxygen

• Nitrogen

How many electron domains are present in PH3?

• 2

• 3

• 4

• 5

What is the molecular geometry of PH3?

• Tetrahedral

• Linear

• Trigonal Pyramidal

• Trigonal Planar

Why is the bond angle in PH3 slightly less than 109.5 degrees?

• Due to the presence of double bonds

• Because of the lone pair repulsion

• Because of hydrogen bonding

• Due to resonance structures

What is the polarity of the PH3 molecule?

• Metallic

• Ionic

• Polar

• Nonpolar

How many valence electrons does arsenic contribute in AsF5?

• 5

• 9

• 3

• 7

What is the molecular shape of AsF5?

• Octahedral

• Square Planar

• Trigonal Bipyramidal

• Tetrahedral

What are the bond angles present in AsF5?

• 90 and 120 degrees

• 120 and 180 degrees

• 90 and 180 degrees

• 60 and 120 degrees

How many electron domains are present in SeCl6?

• 6

• 5

• 4

• 7

What is the hybridization of SeCl6?

• sp2

• sp3

• sp3d

• sp3d2