How many valence electrons are in an atom of magnesium? 1.2 2.3 3.4 4.5.
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Transcript of How many valence electrons are in an atom of magnesium? 1.2 2.3 3.4 4.5.
How many valence electrons are in an atom of magnesium?
2 3 4 5
0% 0%0%0%
1. 2
2. 3
3. 4
4. 5
How many dots around a silicon atom in a Lewis Dot?
2 4 6 8
0% 0%0%0%
1. 2
2. 4
3. 6
4. 8
What is the charge on the strontium ion?
2-
1-
1+
2+
0% 0%0%0%
1. 2-
2. 1-
3. 1+
4. 2+
What is the formula of the ion formed when potassium achieves noble-gas electron
configuration?
K2+
K1+ K
1- K
2-
0% 0%0%0%
1. K2+
2. K1+
3. K1-
4. K2-
Which of the following elements forms an ion with a charge of -1?
fluorin
e
hyd
rogen
pota
ssiu
m
sodiu
m
0% 0%0%0%
1. fluorine
2. hydrogen
3. potassium
4. sodium
How many electrons does nitrogen gain in order to achieve a noble-gas electron
configuration?
1 2 3 4
0% 0%0%0%
1. 1
2. 2
3. 3
4. 4
How does oxygen obey the octet rule when reacting to form compounds?
It g
ains
ele
ctro
ns.
It g
ives
up
elec
trons.
It d
oes n
ot chan
ge it.
..
Oxy
gen d
oes n
ot ob..
0% 0%0%0%
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.
What is the charge on each cation in the ionic compound sodium sulfide?
-1 1 2 -2
0% 0%0%0%
1. 1-
2. 1
3. 2
4. 2-
What is the net charge of the ionic compound calcium fluoride?
2-
1- 0 1
0% 0%0%0%
1. 2-
2. 1-
3. 0
4. 1
Which of the following is true about an ionic compound?
It is
a s
alt.
It is
hel
d toge
ther
by
...
It is
com
posed
of a
ni...
all
of th
e ab
ove
0% 0%0%0%
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
How many valence electrons are transferred from the calcium atom to iodine in the
formation of the compound calcium iodide?
0 1 2 3
0% 0%0%0%
1. 0
2. 1
3. 2
4. 3
What is the formula for the ionic compound sodium nitride?
Na3
N
NaN
3
Na2
N2 N
aN
0% 0%0%0%
1. Na3N
2. NaN3
3. Na2N2
4. NaN
What is the formula for aluminum oxide?
Al2
O3
AlO
3
Al3
O2
AlO
0% 0%0%0%
1. Al2O3
2. AlO3
3. Al3O2
4. AlO
What is the formula for potassium sulfide?
KS2
K2S
2 K
2S KS
0% 0%0%0%
1. KS2
2. K2S2
3. K2S
4. KS
How does titanium obey the octet rule when reacting to form compounds?
It g
ains
ele
ctro
ns.
It g
ives
up
elec
trons.
It d
oes n
ot chan
ge it.
..
Cal
cium
does
not
ob..
0% 0%0%0%
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.
What is the charge of the anion in the ionic compound calcium sulfide?
-1 1 2 -2
0% 0%0%0%
1. -1
2. 1
3. 2
4. -2
What is the charge of the cation in the ionic compound CaS?
1- 1 2
- 2
+
0% 0%0%0%
1. 1-
2. 1
3. 2-
4. 2+
What is the charge on each ammonium ion in Rb3N?
3-
2-
1-
1+
2+
0% 0% 0%0%0%
1. 3-
2. 2-
3. 1-
4. 1+
5. 2+
What is the net charge of the ionic compound calcium fluoride?
2-
1- 0 1
0% 0%0%0%
1. 2-
2. 1-
3. 0
4. 1
What is the formula for the ionic compound sodium nitrite?
Na3
NO3
Na3
N
Na2
NO3
NaN
O3
0% 0%0%0%
1. Na3N3
2. Na3N
3. Na2N3
4. NaN3
What is the formula ofiron(III) oxide?
FeO
3 F
eO
Fe2
O3
Fe3
O2
0% 0%0%0%
1. FeO3
2. FeO
3. Fe2O3
4. Fe3O2
What is the formula for potassium sulfide?
K2S
O4
K2(
SO)4
K2(
SO4)2
K(S
O4)2
0% 0%0%0%
1. K2S
2. K2S4
3. K4S2
4. K(SO4)2
What is the formula of the ion formed when potassium achieves noble-gas electron
configuration?
K2+
K1+ K
1- K
2-
0% 0%0%0%
1. K2+
2. K1+
3. K1-
4. K2-
Name the following compound: CaCl2
Cal
cium
dic
hlorid
e
Cal
cium
(II)
chlo
ride
Cal
cium
chlo
ride
Cal
cium
chlo
rine
0% 0%0%0%
1. Calcium dichloride
2. Calcium (II) chloride
3. Calcium chloride
4. Calcium chlorine
What is the correct formula for magnesium chloride?
MnCl
Mn2C
l
MnCl2
Mn2C
l2
0% 0%0%0%
1. MgCl
2. Mg2Cl
3. MgCl24. Mg2Cl2
What is the correct formula for sodium phosphate?
NaP
NaP
O4
Na3
PO4
Na(
PO4)3
0% 0%0%0%
1. NaP
2. NaPO4
3. Na3PO4
4. Na(PO4)3
How many valence electrons are in an atom of magnesium?
2 3 4 5
0% 0%0%0%
1. 2
2. 3
3. 4
4. 5
How many valence electrons are in a silicon atom?
2 4 6 8
0% 0%0%0%
1. 2
2. 4
3. 6
4. 8
How does calcium obey the octet rule when reacting to form compounds?
It g
ains
ele
ctro
ns.
It g
ives
up
elec
trons.
It d
oes n
ot chan
ge it.
..
Cal
cium
does
not
ob..
0% 0%0%0%
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.
What is the electron configuration of the calcium ion?
1s2
2s22
p63s
2
1s2
2s22
p63s
23p6
1s2
2s22
p63s
23p6
4s2
1s2
2s22
p63s
23p2
4s2
0% 0%0%0%
1. 1s22s22p63s2
2. 1s22s22p63s23p6
3. 1s22s22p63s23p64s2
4. 1s22s22p63s23p24s2
What is the electron configuration of the sulfide ion?
1s2
2s22
p63s
23p6
1s2
2s22
p63s
23p2
1s2
2s22
p63s
23p4
1s2
2s22
p63s
6
0% 0%0%0%
1. 1s22s22p63s23p6
2. 1s22s22p63s23p2
3. 1s22s22p63s23p4
4. 1s22s22p63s6
What is the charge on the strontium ion?
2-
1-
1+
2+
0% 0%0%0%
1. 2-
2. 1-
3. 1+
4. 2+
What is the formula of the ion formed when potassium achieves noble-gas electron
configuration?
K2+
K1+ K
1- K
2-
0% 0%0%0%
1. K2+
2. K1+
3. K1-
4. K2-
Which of the following elements forms an ion with a charge of -1?
fluorin
e
hyd
rogen
pota
ssiu
m
sodiu
m
0% 0%0%0%
1. fluorine
2. hydrogen
3. potassium
4. sodium
How many electrons does nitrogen gain in order to achieve a noble-gas electron
configuration?
1 2 3 4
0% 0%0%0%
1. 1
2. 2
3. 3
4. 4
How does oxygen obey the octet rule when reacting to form compounds?
It g
ains
ele
ctro
ns.
It g
ives
up
elec
trons.
It d
oes n
ot chan
ge it.
..
Oxy
gen d
oes n
ot ob..
0% 0%0%0%
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.
What is the electron configuration of the oxide ion (O)?
1s2
2s2
1s2
2s22
p2
1s2
2s22
p4
1s2
2s22
p6
0% 0%0%0%
1. 1s22s2
2. 1s22s22p2
3. 1s22s22p4
4. 1s22s22p6
What is the charge on the cation in the ionic compound sodium sulfide?
-1 1 2 -2
0% 0%0%0%
1. -1
2. 1
3. 2
4. -2
What is the net charge of the ionic compound calcium fluoride?
2-
1- 0 1
0% 0%0%0%
1. 2-
2. 1-
3. 0
4. 1
Which of the following is true about an ionic compound?
It is
a s
alt.
It is
hel
d toge
ther
by
...
It is
com
posed
of a
ni...
all
of th
e ab
ove
0% 0%0%0%
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
How many valence electrons are transferred from the calcium atom to iodine in the
formation of the compound calcium iodide?
0 1 2 3
0% 0%0%0%
1. 0
2. 1
3. 2
4. 3
What is the formula for the ionic compound sodium nitride?
Na3
N
NaN
3
Na2
N2 N
aN
0% 0%0%0%
1. Na3N
2. NaN3
3. Na2N2
4. NaN
What is the formula unit of aluminum oxide?
Al2
O3
AlO
3
Al3
O2
AlO
0% 0%0%0%
1. Al2O3
2. AlO3
3. Al3O2
4. AlO
What is the formula for potassium sulfide?
KS2
K2S
2 K
2S KS
0% 0%0%0%
1. KS2
2. K2S2
3. K2S
4. KS
An ionic bond is a bond between ____.
a c
atio
n and a
n anio
n
val
ence
ele
ctro
ns an
...
the
ions
of two d
iffer
e..
the
ions
of two d
iffer
e..
0% 0%0%0%
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
Write the formula for the compound barium oxide.
Write the formula for the compound rubidium phosphide.
Write the formula for the compound boron chloride.