21 Questions
In a trigonal bipyramidal electron-pair geometry, what are the two distinct positions?
Axial and equatorial positions
Why do lone pairs in a trigonal bipyramidal structure occupy equatorial positions?
Because equatorial positions have more space available
What is the ideal bond angle in the axial position of a trigonal bipyramidal structure?
90°
Which molecular structure is observed in the ClF3 molecule according to the text?
T-shaped
In an octahedral electron-pair geometry, how many bonding regions does the central atom have?
Four
How do you determine the electron-pair geometry of a molecule based on VSEPR theory?
Count the number of regions of electron density around the central atom
What prevents lone pair-lone pair repulsions in a square planar molecular structure?
Positioning lone pairs in equatorial locations
What is the correct arrangement for the three bonds and two lone pairs in a ClF3 molecule?
Both lone pairs in equatorial positions
Why do lone pairs in a trigonal bipyramidal electron-pair geometry occupy equatorial positions?
To minimize lone pair-lone pair repulsions
In a trigonal bipyramidal structure, what is the orientation of the bond angles in the axial position?
90°
What is the electron-pair geometry when a central atom has two lone electron pairs and four bonding regions?
Octahedral
Which molecular structure minimizes lone pair-lone pair repulsions in an octahedral electron-pair geometry?
Square planar
In a trigonal bipyramidal structure, how many distinct X positions are there?
Two
What is the ideal bond angle in the equatorial position of a trigonal bipyramidal structure?
120°
Why do lone pairs occupy equatorial positions in a trigonal bipyramidal electron-pair geometry?
To minimize repulsions with other electron pairs
What molecular structure is observed in the ClF3 molecule?
"A" shaped
What is the molecular structure observed in the ClF3 molecule?
T-shaped
In a trigonal bipyramidal electron-pair geometry, why do lone pairs always occupy equatorial positions?
To accommodate the larger lone pairs
How many distinct X positions are there in a trigonal bipyramidal electron-pair geometry?
Two
What prevents lone pair-lone pair repulsions in the square planar molecular structure of an octahedral electron-pair geometry?
Lone pairs are 180° apart
When a central atom has two lone electron pairs and four bonding regions, what is the resulting molecular structure?
Square planar
Learn about the order of electron-pair repulsions and sizes in chemistry. Understand how lone pairs and bonding pairs affect the space they occupy in molecules.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
