VSEPR and Molecular Geometry

Which VSEPR molecular shape is associated with a central atom with no lone pairs and four bonded atoms?

• Bent

• Tetrahedral

• Trigonal planar

• Linear

• Linear

• Tetrahedral

• Bent

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

• Bent

• Linear

How does VSEPR theory explain molecular shape?

• By minimizing the repulsion between valence electron pairs around the central atom

• By maximizing the distance between nuclei

• By minimizing the energy of the molecule

• By maximizing the repulsion between nuclei

Which molecular geometry is formed by two bonding pairs and two lone pairs of electrons?

• Linear

• Trigonal planar

• Tetrahedral

• Bent

How does the presence of lone pairs affect the bond angles in a molecule?

• Increases the bond angles

• Decreases the bond angles

• Does not affect the bond angles

• Randomly affects the bond angles

What is the shape of a molecule with three bonding pairs and no lone pairs of electrons?

• Linear

• Trigonal planar

• Tetrahedral

• Bent

Which molecular geometry has four bonding pairs and no lone pairs of electrons?

• Linear

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

In a trigonal pyramidal molecule, how many bonding pairs and lone pairs are there?

• 3 bonding pairs, 1 lone pair

• 2 bonding pairs, 2 lone pairs

• 4 bonding pairs, 0 lone pairs

• 3 bonding pairs, 0 lone pairs

Tags

NGSS.HS-PS1-3

A molecule with two lone pairs on the central atom and two attached atoms would have the same molecular geometry as a molecule with four atoms attached to the central atom?

• True

• False

Answer explanation

False, because a molecule with two lone pairs on the central atom and two attached atoms would have a different molecular geometry than a molecule with four atoms attached to the central atom.