WorksheetsVSEPR REVIEW
Total questions: 21
Worksheet time: 35mins
transferred
gained
lost
shared
A pair of bonding electrons
One non-bonding electron
A pair of non-bonding electrons on the central atom
A pair of electrons
Pairs of electrons that are not used between bonding atoms are called-
single pairs
bonding pairs
adjacent pairs
lone pairs
How many lone pairs of electrons will a trigonal pyramid molecule have?
1
2
3
4
Match the following formulas to the shape it will make:
HCl
linear
H2S
bent
BBr3
trigonal planar
PBr3
trigonal pyramid
CCl4
tetrahedral
Draw the Lewis Dot Diagram for SiH4:
The only difference between trigonal planar and trigonal pyramid is that the pyramid has (a) .
Draw the Lewis Dot Diagram for AsF3:
Draw the Lewis Dot Diagram for BCl3:
Draw the Lewis Dot Diagram for H2Se:
Draw the Lewis Dot Diagram for SiS2:
Draw the Lewis Dot Diagram for H2:
The VSEPR Theory explains the (a) of molecules. Electrons repel each other so when another bond or lone pair is added to the molecule, the electrons will adjust their positions to be as far apart as possible. When drawing the Lewis Dot Diagram for a covalent compound, the element with only 1 atom will be the (b) atom. The others atoms are called bonding atoms. Sometimes, the central atom will have 1 or 2 (c) . These are pairs of electrons that do not (d) with anything else. The only 2 molecular shapes with lone pairs are bent and trigonal (e) .
Match the following elements to the number of bonds they will make in a molecule:
H
1
B
has 3, makes 3
C
4
N
has 5, makes 3
O
2
Match the following molecular shape to the correct description:
linear
2 bonding pairs, 0 lone pairs
bent
2 bonding pairs, 2 lone pairs
trigonal planar
3 bonding pairs, 0 lone pairs
trigonal pyramid
3 bonding pairs, 1 lone pair
tetrahedral
4 bonding pairs, 0 lone pairs
Fluorine has (a) valence electrons so it will make (b) bond(s). Sulfur has (c) valence electrons so it will make (d) bond(s). Boron has 3 valence electrons so it will make (e) bond(s).
Cl2 will form a (a) shape. H2Te will form a (b) shape. BF3 will form a (c) shape. SbCl3 will form a (d) shape. SiI4 (silicon & iodine) will form a (e) shape.
When P2 bonds together, how many bonds will be between them?
1
2
3
4
