UNIT 4 CHECKPOINT
Not for points, just for practice!
Which of the elements would be the
least reactive metal?
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
15
16
ne
s
17
18
fu
r
0%
16
-S
ul
iu
m
e
or
in
co
n
14
0%
ag
3
0%
12
-M
2
13
-A
lu
1
0%
14
-S
ili
in
um
0%
17
-C
hl
13-Aluminum
14-Silicon
17-Chlorine
12- Magnesium
16-Sulfur
m
1.
2.
3.
4.
5.
19
20
Which element in period 4 will have
the highest electronegativity?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
Potassium
Calcium
Germanium
Selenium
Bromine
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which element in period 4 will have
the largest atomic radius?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
Potassium
Calcium
Germanium
Selenium
Bromine
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which element in period 4 will have
the lowest ionization energy?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
Potassium
Calcium
Germanium
Selenium
Bromine
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which element in period 4 will have 4
valence electrons?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
Potassium
Calcium
Germanium
Selenium
Bromine
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which element in period 4 will have an
oxidation number of 1-?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
Potassium
Calcium
Germanium
Selenium
Bromine
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Who proposed the theory that
properties of elements are periodic
functions of their atomic numbers?
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
14
15
16
le
e
17
18
0%
an
ic
v
y
in
er
13
0%
Pe
h
5
0%
M
en
de
4
Do
be
3
re
la
2
Ne
w
1
0%
le
0%
M
os
e
Newlands
Dobereiner
Moseley
Mendeleev
Pehanic
nd
s
1.
2.
3.
4.
5.
19
20
32-Germanium is in what family of the
periodic table?
Alkali Metals
Alkaline Earth Metals
Transition Metals
Inner Transition Metals
Post Transition Metals
Halogens
Noble Gases
Metalloids
Other Nonmetals
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
0%
0%
0%
0%
0%
0%
0%
0%
0%
Al
ka
li M
Al
et
ka
al
s
lin
e
E
Tr
ar
an
th
...
s it
io
nM
In
et
ne
...
rT
ra
ns
Po
iti
st
...
Tr
an
sit
io
...
Ha
lo
ge
ns
No
bl
eG
as
es
M
e
Ot
ta
he
llo
rN
id
s
on
m
et
al.
..
1.
2.
3.
4.
5.
6.
7.
8.
9.
12
13
14
15
16
17
18
19
20
56-Barium is in what family of the
periodic table?
Alkali Metals
Alkaline Earth Metals
Transition Metals
Inner Transition Metals
Post Transition Metals
Halogens
Noble Gases
Metalloids
Other Nonmetals
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
0%
0%
0%
0%
0%
0%
0%
0%
0%
Al
ka
li M
Al
et
ka
al
s
lin
e
E
Tr
ar
an
th
...
s it
io
nM
In
et
ne
...
rT
ra
ns
Po
iti
st
...
Tr
an
sit
io
...
Ha
lo
ge
ns
No
bl
eG
as
es
M
e
Ot
ta
he
llo
rN
id
s
on
m
et
al.
..
1.
2.
3.
4.
5.
6.
7.
8.
9.
12
13
14
15
16
17
18
19
20
An atom of sodium has 11 protons, 12
neutrons, and 10 electrons. What is its
mass number?
1.
2.
3.
4.
0%
0%
0%
0%
21
22
23
22.989
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
37-Rubidium would have all of the
following characteristics except?
9
10
21
22
23
24
25
26
27
28
29
30
11
12
14
at
Br
15
16
17
.
0%
Ele
c..
en
ce
it t
le
Ro
om
ne
...
...
il.
..
le
M
al
13
18
al
8
0%
1V
7
0%
id
6
Hi
gh
5
Hi
gh
4
ab
uc
tiv
3
Co
nd
2
Hi
gh
1
0%
So
l
High Conductivity
High Malleability
High Brittleness
Solid at Room Temperature
0%
1 Valence Electron
...
1.
2.
3.
4.
5.
19
20
34-Selenium would have how many
valence electrons?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
2
4
6
7
8
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which of the following is a nonmetal?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
3-Lithium
16-Sulfur
49-Indium
51-Antimony
58-Cerium
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
What is the oxidation number for
20-Calcium?
1.
2.
3.
4.
5.
6.
0%
0%
0%
0%
0%
0%
1+
2+
6+
126-
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Which element is most likely manmade (not naturally occurring)?
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
5-Boron
17-Chlorine
38-Strontium
46- Palladium
95-Americium
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
How many valence electrons do the
transition metals have?
1.
2.
3.
4.
5.
20%
20%
20%
20%
20%
One valence electron
Two valence electrons
Three valence electrons
Variable number of valence electrons
Zero valence electrons
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20