Exploring VSEPR Theory and Molecular Shapes

The video tutorial explores the shapes of molecules by examining the arrangement of atoms and electron pairs around a central atom. It covers various molecular geometries, including linear, trigonal planar, bent, tetrahedral, and trigonal pyramidal shapes. The instructor uses polystyrene balls and sticks to model these shapes, explaining how the introduction of atoms or lone pairs affects molecular geometry.

What is the shape of a molecule with two atoms 180 degrees apart?

• Trigonal

• Bent

• Tetrahedral

• Linear

What molecular shape is formed when a third atom is added on the same plane?

• Trigonal planar

• Linear

• Tetrahedral

• Bent

Which molecular geometry is described when three atoms are arranged in a single plane around a central atom?

• Bent

• Trigonal planar

• Tetrahedral

• Linear

What is the shape of a molecule with two bonding atoms and one lone pair?

• Tetrahedral

• Bent

• Trigonal planar

• Linear

What is the geometry called when a molecule has four bonding atoms around a central atom?

• Tetrahedral

• Bent

• Trigonal planar

• Linear

What angle is typically observed in a tetrahedral geometry?

• 90 degrees

• 109 degrees

• 120 degrees

• 180 degrees

Which molecular shape is not planar?

• Linear

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

What molecular shape results when one bonding atom in a tetrahedral is replaced with a lone pair?

• Linear

• Trigonal pyramidal

• Bent

• Tetrahedral

What is the shape of a molecule that has three bonding atoms and one lone pair?

• Trigonal pyramidal

• Bent

• Trigonal planar

• Linear

What happens to the molecular shape when two bonding atoms and two lone pairs are present?

• Linear

• Trigonal planar

• Bent

• Tetrahedral