Molecular Geometry

Question 1

What is molecular geometry?

Answer 1

The three-dimensional arrangement of atoms in a molecule.

Question 2

True or False: Molecular geometry is determined by the arrangement of electron pairs around the central atom.

Answer 2

True

Question 3

What theory is used to predict molecular geometry?

Answer 3

VSEPR theory (Valence Shell Electron Pair Repulsion theory).

Question 4

Fill in the blank: In VSEPR theory, electron pairs repel each other to minimize ______.

Answer 4

repulsion

Question 5

What is the molecular geometry of methane (CH4)?

Answer 5

Tetrahedral

Question 6

Which molecular geometry has bond angles of approximately 120 degrees?

Answer 6

Trigonal planar

Question 7

True or False: A linear molecular geometry has bond angles of 180 degrees.

Answer 7

True

Question 8

What is the molecular geometry of water (H2O)?

Answer 8

Bent or Angular

Question 9

Which molecular geometry is associated with two bonding pairs and two lone pairs?

Answer 9

Bent

Question 10

What molecular geometry corresponds to a central atom with no lone pairs and three bonding pairs?

Answer 10

Trigonal planar

Question 11

What is the bond angle in a tetrahedral molecular geometry?

Answer 11

Approximately 109.5 degrees

Question 12

Fill in the blank: The geometry of a molecule can be affected by the presence of ______ pairs.

Answer 12

lone

Question 13

True or False: The molecular geometry of ammonia (NH3) is trigonal pyramidal.

Answer 13

True

Question 14

What is the molecular geometry of carbon dioxide (CO2)?

Answer 14

Linear

Question 15

Which molecular geometry has bond angles of approximately 109.5 degrees?

Answer 15

Tetrahedral

Question 16

What is the molecular geometry of sulfur hexafluoride (SF6)?

Answer 16

Octahedral

Question 17

What shape is associated with a central atom bonded to four other atoms and one lone pair?

Answer 17

Seesaw

Question 18

Fill in the blank: A molecule with a central atom bonded to two atoms and one lone pair has a ______ geometry.

Answer 18

Bent

Question 19

What is the molecular geometry of phosphorus trichloride (PCl3)?

Answer 19

Trigonal pyramidal

Question 20

True or False: Molecular geometry is solely determined by the types of atoms present in a molecule.

Answer 20

False

Question 21

What type of molecular geometry is represented by the formula AX2E2?

Answer 21

Bent

Question 22

What is the bond angle in a trigonal bipyramidal molecular geometry?

Answer 22

120 degrees and 90 degrees

Question 23

Which molecular geometry is characterized by five bonding pairs and no lone pairs?

Answer 23

Trigonal bipyramidal

Question 24

What is the molecular geometry of a molecule with the formula AX4?

Answer 24

Tetrahedral

Question 25

Fill in the blank: The arrangement of electron groups around a central atom determines its ______ geometry.

Answer 25

electron

Question 26

What is the molecular geometry of a water molecule?

Answer 26

Bent