How many valence electrons
are in an atom of magnesium?
2
3
4
5
0%
5
0%
4
0%
3
0%
2
1.
2.
3.
4.
How many dots around a silicon
atom in a Lewis Dot?
2
4
6
8
0%
8
0%
6
0%
4
0%
2
1.
2.
3.
4.
What is the charge on the
strontium ion?
0%
0%
2+
0%
1-
0%
1+
211+
2+
2-
1.
2.
3.
4.
What is the formula of the ion formed when
potassium achieves noble-gas electron
configuration?
K2+
K1+
K1K2-
2-
0%
K
1-
0%
K
1+
0%
K
2+
0%
K
1.
2.
3.
4.
Which of the following elements forms an
ion with a charge of -1?
fluorine
hydrogen
potassium
sodium
po
so
ta
s
en
dr
og
0%
di
um
0%
si
um
0%
hy
or
in
e
0%
flu
1.
2.
3.
4.
How many electrons does nitrogen gain in
order to achieve a noble-gas electron
configuration?
1. 1
2. 2
3. 3
4. 4
0%
4
0%
3
0%
2
1
0%
How does oxygen obey the octet rule
when reacting to form compounds?
1. It gains electrons.
2. It gives up electrons.
3. It does not change
its number of
electrons.
4. Oxygen does not
obey the octet rule.
b.
.
.
to
it.
.
e
ge
n
do
es
no
ng
tc
ha
no
xy
O
It
do
e
s
es
gi
v
It
It
ga
i
up
ns
el
ec
el
ec
tro
n
tro
n
s.
s.
0% 0% 0% 0%
What is the charge on each cation in the
ionic compound sodium sulfide?
11
2
2-
0%
-2
0%
2
0%
1
0%
-1
1.
2.
3.
4.
What is the net charge of the ionic
compound calcium fluoride?
210
1
0%
1
0%
0
0%
1-
0%
2-
1.
2.
3.
4.
Which of the following is true
about an ionic compound?
1. It is a salt.
2. It is held together
by ionic bonds.
3. It is composed of
anions and
cations.
4. all of the above
It
is
co
he
ld
ve
ab
o
lo
ft
he
al
m
po
se
to
ge
t
d
he
r
of
a
by
a
is
It
is
It
ni
...
...
sa
lt.
0% 0% 0% 0%
How many valence electrons are transferred
from the calcium atom to iodine in the
formation of the compound calcium iodide?
1. 0
2. 1
3. 2
4. 3
0%
3
0%
2
0%
1
0
0%
What is the formula for the ionic compound
sodium nitride?
Na3N
NaN3
Na2N2
NaN
aN
0%
N
a2
N2
0%
N
aN
3
0%
N
a3
N
0%
N
1.
2.
3.
4.
What is the formula for aluminum
oxide?
Al2O3
AlO3
Al3O2
AlO
A
lO
0%
A
l3
O
3
lO
A
l2
O
0%
2
0%
3
0%
A
1.
2.
3.
4.
What is the formula for potassium
sulfide?
KS2
K2S2
K2S
KS
S
0%
K
2S
0%
K
2S
2
0%
K
S2
0%
K
1.
2.
3.
4.
How does titanium obey the octet rule
when reacting to form compounds?
1. It gains electrons.
2. It gives up electrons.
3. It does not change
its number of
electrons.
4. Calcium does not
obey the octet rule.
b.
.
.
no
to
it.
.
e
ng
um
do
es
tc
ha
no
al
ci
C
It
do
e
s
es
gi
v
It
It
ga
i
up
ns
el
ec
el
ec
tro
n
tro
n
s.
s.
0% 0% 0% 0%
What is the charge of the anion in the ionic
compound calcium sulfide?
-1
1
2
-2
0%
-2
0%
2
0%
1
0%
-1
1.
2.
3.
4.
What is the charge of the cation in the ionic
compound CaS?
0%
0%
2+
0%
1
0%
2-
11
22+
1-
1.
2.
3.
4.
What is the charge on each
ammonium ion in Rb3N?
3211+
2+
0%
2+
0%
1+
0%
1-
0%
2-
0%
3-
1.
2.
3.
4.
5.
What is the net charge of the ionic
compound calcium fluoride?
210
1
0%
1
0%
0
0%
1-
0%
2-
1.
2.
3.
4.
What is the formula for the ionic compound
sodium nitrite?
Na3N3
Na3N
Na2N3
NaN3
0%
3
aN
O
a2
N
N
NO
N
a3
N
NO
a3
0%
3
0%
3
0%
N
1.
2.
3.
4.
What is the formula of
iron(III) oxide?
FeO3
FeO
Fe2O3
Fe3O2
3O
2
0%
Fe
2O
3
0%
Fe
O
0%
Fe
O
3
0%
Fe
1.
2.
3.
4.
What is the formula for
potassium sulfide?
K2S
K2S4
K4S2
K(SO4)2
(S
O
4)
2
0%
K
2(
SO
4)
2
0%
K
2(
SO
)4
0%
K
2S
O
4
0%
K
1.
2.
3.
4.
What is the formula of the ion formed when
potassium achieves noble-gas electron
configuration?
K2+
K1+
K1K2-
2-
0%
K
1-
0%
K
1+
0%
K
2+
0%
K
1.
2.
3.
4.
Name the following compound:
CaCl2
1. Calcium dichloride
2. Calcium (II)
chloride
3. Calcium chloride
4. Calcium chlorine
lo
rin
e
ch
um
al
ci
um
al
ci
C
0%
lo
rid
e
ch
ch
(II
)
um
al
ci
C
0%
C
e
lo
rid
di
ch
um
al
ci
C
0%
lo
rid
e
0%
What is the correct formula for
magnesium chloride?
MgCl
Mg2Cl
MgCl2
Mg2Cl2
n2
C
l2
0%
M
nC
l2
0%
M
n2
C
l
0%
M
nC
l
0%
M
1.
2.
3.
4.
What is the correct formula for
sodium phosphate?
NaP
NaPO4
Na3PO4
Na(PO4)3
a(
PO
4)
4
PO
a3
N
N
aP
aP
0%
3
0%
N
0%
O
4
0%
N
1.
2.
3.
4.
How many valence electrons
are in an atom of magnesium?
2
3
4
5
0%
5
0%
4
0%
3
0%
2
1.
2.
3.
4.
How many valence electrons
are in a silicon atom?
2
4
6
8
0%
8
0%
6
0%
4
0%
2
1.
2.
3.
4.
How does calcium obey the octet rule
when reacting to form compounds?
1. It gains electrons.
2. It gives up electrons.
3. It does not change
its number of
electrons.
4. Calcium does not
obey the octet rule.
b.
.
.
no
to
it.
.
e
ng
um
do
es
tc
ha
no
al
ci
C
It
do
e
s
es
gi
v
It
It
ga
i
up
ns
el
ec
el
ec
tro
n
tro
n
s.
s.
0% 0% 0% 0%
What is the electron configuration
of the calcium ion?
1s22s22p63s2
1s22s22p63s23p6
1s22s22p63s23p64s2
1s22s22p63s23p24s2
3p
24
s2
0%
s2
s2
22
1s
1s
22
s2
2p
63
s2
2p
63
s2
22
1s
3p
64
3p
6
2p
63
s2
2p
63
s2
22
0%
s2
0%
s2
0%
1s
1.
2.
3.
4.
What is the electron configuration
of the sulfide ion?
1s22s22p63s23p6
1s22s22p63s23p2
1s22s22p63s23p4
1s22s22p63s6
s6
0%
2p
63
3p
4
1s
22
s2
s2
22
s2
2p
63
s2
1s
1s
22
s2
2p
63
s2
2p
63
s2
22
0%
3p
2
0%
3p
6
0%
1s
1.
2.
3.
4.
What is the charge on the
strontium ion?
0%
0%
2+
0%
1-
0%
1+
211+
2+
2-
1.
2.
3.
4.
What is the formula of the ion formed when
potassium achieves noble-gas electron
configuration?
K2+
K1+
K1K2-
2-
0%
K
1-
0%
K
1+
0%
K
2+
0%
K
1.
2.
3.
4.
Which of the following elements forms an
ion with a charge of -1?
fluorine
hydrogen
potassium
sodium
po
so
ta
s
en
dr
og
0%
di
um
0%
si
um
0%
hy
or
in
e
0%
flu
1.
2.
3.
4.
How many electrons does nitrogen gain in
order to achieve a noble-gas electron
configuration?
1. 1
2. 2
3. 3
4. 4
0%
4
0%
3
0%
2
1
0%
How does oxygen obey the octet rule
when reacting to form compounds?
1. It gains electrons.
2. It gives up electrons.
3. It does not change
its number of
electrons.
4. Oxygen does not
obey the octet rule.
b.
.
.
to
it.
.
e
ge
n
do
es
no
ng
tc
ha
no
xy
O
It
do
e
s
es
gi
v
It
It
ga
i
up
ns
el
ec
el
ec
tro
n
tro
n
s.
s.
0% 0% 0% 0%
What is the electron configuration of the
oxide ion (O)?
1s22s2
1s22s22p2
1s22s22p4
1s22s22p6
1s
22
s2
2p
6
0%
s2
22
1s
1s
22
s2
22
2p
2
0%
2p
4
0%
s2
0%
1s
1.
2.
3.
4.
What is the charge on the cation in the ionic
compound sodium sulfide?
-1
1
2
-2
0%
-2
0%
2
0%
1
0%
-1
1.
2.
3.
4.
What is the net charge of the ionic
compound calcium fluoride?
210
1
0%
1
0%
0
0%
1-
0%
2-
1.
2.
3.
4.
Which of the following is true
about an ionic compound?
1. It is a salt.
2. It is held together
by ionic bonds.
3. It is composed of
anions and
cations.
4. all of the above
It
is
co
he
ld
ve
ab
o
lo
ft
he
al
m
po
se
to
ge
t
d
he
r
of
a
by
a
is
It
is
It
ni
...
...
sa
lt.
0% 0% 0% 0%
How many valence electrons are transferred
from the calcium atom to iodine in the
formation of the compound calcium iodide?
1. 0
2. 1
3. 2
4. 3
0%
3
0%
2
0%
1
0
0%
What is the formula for the ionic compound
sodium nitride?
Na3N
NaN3
Na2N2
NaN
aN
0%
N
a2
N2
0%
N
aN
3
0%
N
a3
N
0%
N
1.
2.
3.
4.
What is the formula unit of
aluminum oxide?
Al2O3
AlO3
Al3O2
AlO
A
lO
0%
A
l3
O
3
lO
A
l2
O
0%
2
0%
3
0%
A
1.
2.
3.
4.
What is the formula for potassium
sulfide?
KS2
K2S2
K2S
KS
S
0%
K
2S
0%
K
2S
2
0%
K
S2
0%
K
1.
2.
3.
4.
An ionic bond is a bond
between ____.
1. a cation and an
anion
2. valence electrons
and cations
3. the ions of two
different metals
4. the ions of two
different nonmetals
.
.
di
ffe
re
.
io
n
e
th
th
e
io
n
s
of
tw
o
di
ffe
re
.
tw
o
of
s
el
nc
e
le
va
a
ca
tio
n
ec
an
d
tro
n
an
s
an
an
...
io
n
0% 0% 0% 0%
Write the formula for the
compound barium oxide.
Write the formula for the
compound rubidium phosphide.
Write the formula for the
compound boron chloride.