42 Questions
What is the general formula for a trigonal planar molecule?
AX₃
What is the name of the theory used to determine the molecular shape?
VSEPR theory
What is the geometry of a molecule with 2 bonding pairs and 2 lone pairs?
Bent or Angular
What is the primary factor that determines the shape of a molecule?
The repulsion among electron pairs
What is the purpose of drawing a Lewis diagram when determining molecular shape?
To show all valence electrons around the central atom
What is the shape of the BF₃ molecule?
Trigonal Planar
What is the general formula for a linear molecule?
AX₂
What does VSEPR theory predict?
The shape of a molecule
What is the step to determine the basic geometry of a molecule?
Determine Basic Geometry
What is the importance of molecular shape?
It influences properties such as boiling point and melting point
What is the shape of the NH₃ molecule?
Trigonal Pyramidal
What is the correct order of steps when determining molecular shape using VSEPR theory?
Draw the Lewis diagram, count electron pairs, determine geometry
What type of electron pairs does VSEPR theory consider when determining molecular shape?
Both bonding and lone pairs of electrons
What is the first step to predict the molecular shape?
Draw the Lewis Diagram
Which of the following properties is influenced by the molecular shape of a molecule?
Boiling point
What is the main reason behind the arrangement of valence electron pairs around a central atom in a molecule?
To minimize repulsion
What is the purpose of counting electron pairs in the VSEPR theory?
To determine the molecular shape
Which of the following is NOT a step in determining molecular shape using VSEPR theory?
Determining the molecular mass
What is the role of the central atom in determining the molecular shape of a molecule?
It determines the arrangement of electron pairs
Which of the following statements is TRUE about the VSEPR theory?
It considers both bonding and non-bonding electron pairs
What is the general formula for a molecule with a trigonal bipyramidal shape?
AX₅
What does the central atom represent in a 3D visualization of a molecule?
A red ball
What is the geometry of a molecule with 4 bonding pairs and 0 lone pairs?
Tetrahedral
What is the purpose of counting electron pairs in determining the molecular shape?
To identify the molecular shape
What is the shape of a molecule with 1 or 2 bonding pairs and 0 lone pairs?
Linear
What does the Lewis diagram of a molecule show?
The valence electrons around the central atom
What is the geometry of a molecule with 3 bonding pairs and 1 lone pair?
Trigonal Pyramidal
What is represented by a green ball in a 3D visualization of a molecule?
A lone pair
What is the primary reason for the arrangement of valence electron pairs around a central atom in a molecule?
To minimize electron pair repulsion
Which of the following is a consequence of the molecular shape of a molecule?
Influencing the reactivity of the molecule
What is the relationship between the number of electron pairs and the basic geometry of a molecule?
The number of electron pairs determines the basic geometry of a molecule
Why is drawing a Lewis diagram essential in determining molecular shape?
To show the arrangement of electron pairs around the central atom
What is the significance of lone pairs in determining molecular shape?
Lone pairs have a stronger effect on molecular shape than bonding pairs
Why is the molecular shape of a molecule crucial for its function?
It determines the reactivity of the molecule
What is the molecular shape of a molecule with 2 bonding pairs and 1 lone pair?
Bent or Angular
What is the purpose of drawing a Lewis diagram in determining molecular shape?
To show the arrangement of valence electrons around the central atom
Which of the following molecules has a trigonal bipyramidal shape?
AX₅
What is the correct order of steps when determining molecular shape using VSEPR theory?
Draw the Lewis diagram, count electron pairs, determine basic geometry, write the final answer
What is the shape of a molecule with 6 bonding pairs and 0 lone pairs?
Octahedral
What is the function of the central atom in a 3D visualization of a molecule?
To represent the central atom itself
What is the main factor that determines the basic geometry of a molecule?
Total number of electron pairs
What is the shape of a molecule with 3 bonding pairs and 0 lone pairs?
Trigonal Planar
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