Choose the molecule that is incorrectly matched with the electronic geometry about the central atom.
CF4 - tetrahedral
BeBr2 - linear
H2O - tetrahedral
PF3 - pyramidal
Q.2.
What is the molecular shape of a silicon dioxide molecule?
linear
trigonal planar
bent
tetrahedral
Q.3.
What is the molecular geometry of carbon tetrachloride CCl4 ?
Linear
Trigonal planar
tetrahedral
trigonal pyramidal
Q.4.
What molecular geometry would PH3 have?
Trigonal Pyramidal
Trigonal Bipyramidal
Bent
Linear
Q.5.
How many unshared pairs of electrons will a pyramidal molecule have?
1
2
3
4
Q.6.
How many unshared pairs of electrons will a bent molecule have?
1
2
3
4
Q.7.
Which of the following shapes has unshared pairs of electrons on the central atom?
Bipyramidal
Bent
Trigonal Planar
Tetrahedral
Q.8.
Ammonia, NHadopts a tetrahedral geometry. However, the non-bonding pair on the central nitrogen atom distorts the bond angle away from the expected 109.5°. Which of the following statements correctly describes how the bond angle is distorted?
The actual bond angle is reduced: it is less than 109.5°
The actual bond angle is increased: it is more than 109.5°
Q.9.
The bond angle for a trigonal planar molecule is
90 Degrees
109.5 Degrees
120 Degrees
180 Degrees
Q.10.
How many different bond angles will a Trigonal Bipyramidal molecule have?
1
2
3
4
Q.11.
Which shapes are altered by unshared pairs of electrons?
Bent and Pyramidal
Trigonal Planar and Bent
Tetrahedram and Bipyramidal
Pyramidal and Linear
Q.12.
What is the bond angle for a pyramidal molecule?
90
107
109.5
120
Q.13.
What is the bond angle in a bent molecule?
90
105
107
180
Q.14.
What shape would PH3 have?
Trigonal Planar
Trigonal Bipyramidal
Bent
Linear
Q.15.
Which of the following shapes has an unshared pairs of electrons on the central atom?
Bipyramidal
Bent
Trigonal Planar
Tetrahedral
Q.16.
Molecules such as boron trichloride that have three bonded atoms and no unshared pairs have what shape?
trigonal planar
trigonal pyramidal
trigonal bipyramidal
tetrahedral
Q.17.
The acronym VSEPR stand for
very strong electron pair repulsion.
varied symmetry electrostatic proton reaction.
venomous snakes enjoy pink ribbons.
valence shell electron pair repulsion.
Q.18.
VSEPR theory is used to predict
the number of unshared pairs of electrons in a Lewis structure.
the number of multiple bonds in a Lewis structure.
the three-dimensional geometry of a molecule.
the three-dimensional crystal lattice structure of ionic compounds.
Q.19.
Any molecule with only two atoms must be linear. Three-atom molecules such as BeCl2 can also be linear. For linear molecules, the bond angle is
360°360\degree360°
180°180\degree180°
120°120\degree120°
90°90\degree90°
Q.20.
The atoms in a molecule of water adopt what kind of geometry?
Linear
Tetrahedral
Bent
Trigonal planar
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