WorksheetsOnramps Chemistry
Total questions: 20
Worksheet time: 10mins
Bonding – Rank polarity based on change in EN Rank the bonds
H-F, B-N, N-O, Be-H, C-F
From least to greatest difference in electronegativity
Be-H < B-N < N-O < C-F < H-F
Be-H < N-O < B-N < H-F < C-F
N-O < Be-H < B-N < H-F < C-F
N-O < Be-H < B-N < C-F < H-F
Ionic compounds – rank lattice energy
Which of the following has the lowest lattice energy?
KI
) KCl
LiCl
KBr
Ionic compounds – rank lattice energy
Rank the crystal lattice energy of the salts
MgBr2, KNO3, SrS, LiF, CaI2 From greatest to least
SrS > CaI2 > MgBr2 > KNO3 > LiF
SrS > MgBr2 > CaI2 > LiF > KNO3
KNO3 > SrS > MgBr2 > CaI2 > LiF
SrS > CaI2 > MgBr2 > LiF > KNO3
Lewis structures – ionic compounds
Which of the following salts has an incorrect structure?
CaCl2
NaI
CaO
MgBr
Lewis structures – ionic compounds
Which of the following is not a common formula unit for the salts made with main groups cations and anions?
AB
AB2
A2B3
AB4
Lewis structures – simple
Which of the following atoms has an s2p 3 valence electron configuration?
Ga
Ge
As
Se
Lewis structures – simple
Which of the following compounds does not have unpaired electrons on the central atom?
NH3
H2O
CH4
PH3
Lewis structures – multiple central atoms
Draw the Lewis structure for Ethylene, C2H4. How many bonds exist between the two carbons?
1
2
3
4
Lewis structures – multiple central atoms
Which of the following is the correct Lewis structure of ethynol (C2H2O)?
a
b
c
d
Lewis structures – resonance (delocalization)
Which of the following compounds does not exhibit resonance?
CH4
O3
NO3 -
CO3 2-
Octet exceptions – incomplete octet, radicals
Which of the following compounds is a radical?
NH3
CH3
O3
BH3
Octet exceptions – expanded valence
What is the number of electrons around the central atom in XeF4?
10
5
8
12
Octet exceptions – expanded valence
Which of the following molecular geometries is not associated with an expanded valence?
Trigonal pyramidal
Seesaw
Linear
Octahedral
VSEPR – Bond angles
Which of the following has bond angles of 180o
HO2 -
I3 -
NH 2-
O3
VSEPR – Bond angles
In which of the following are the bond angles most distorted by unbonded electron pairs?
NH3
O3
SCl4
H2O
VSEPR – electronic geometries
For which of the following compounds is the electronic geometry not the same as the molecular geometry?
BeCl2
BH3
CH4
SF4
VSEPR – molecular geometries
Which of the following compounds has a molecular geometry that is different from the others?
BeCl2
O3
I3 -
CO2
VSEPR – molecular geometries What is the molecular shape of the IF4 - ion?
Seesaws
T-shaped
Square planar
Octahedral
VSEPR – molecular polarity
Which of the following is polar?
CCl4
CH3Cl
CH4
CO2
VSEPR – molecular polarity
Which of the following is NOT polar?
ClF3
SF4
XeF4
IF4 +
