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WorksheetsPeriodic Table | 1-20 | How Many protons, neutrons & electrons?
Total questions: 60
Worksheet time: 30mins
Name
Class
Date
1.
How many protons are in H
a)
1
b)
0
c)
2
d)
3
2.
How many electrons are in H
a)
1
b)
0
c)
2
d)
3
3.
How many neutrons are in H
a)
0
b)
1
c)
2
d)
3
4.
How many protons are in He
a)
2
b)
1
c)
3
d)
4
5.
How many electrons are in He
a)
2
b)
1
c)
3
d)
4
6.
How many neutrons are in He
a)
2
b)
1
c)
3
d)
4
7.
How many protons are in Li
a)
3
b)
4
c)
5
d)
7
8.
How many electrons are in Li
a)
3
b)
4
c)
5
d)
7
9.
How many neutrons are in Li
a)
4
b)
3
c)
5
d)
7
10.
How many protons are in Be
a)
4
b)
5
c)
7
d)
9
11.
How many electrons are in Be
a)
4
b)
5
c)
7
d)
9
12.
How many neutrons are in Be
a)
5
b)
4
c)
7
d)
9
13.
How many protons are in B
a)
5
b)
6
c)
9
d)
11
14.
How many electrons are in B
a)
5
b)
6
c)
8
d)
11
15.
How many neutrons are in B
a)
6
b)
5
c)
10
d)
11
16.
How many protons are in C
a)
6
b)
7
c)
8
d)
12
17.
How many electrons are in C
a)
6
b)
7
c)
9
d)
12
18.
How many neutrons are in C
a)
6
b)
7
c)
11
d)
12
19.
How many protons are in N
a)
7
b)
8
c)
9
d)
14
20.
How many electrons are in N
a)
7
b)
8
c)
10
d)
14
21.
How many neutrons are in N
a)
7
b)
8
c)
12
d)
14
22.
How many protons are in O
a)
8
b)
12
c)
15
d)
16
23.
How many electrons are in O
a)
8
b)
12
c)
15
d)
16
24.
How many neutrons are in O
a)
8
b)
12
c)
15
d)
16
25.
How many protons are in F
a)
9
b)
14
c)
18
d)
19
26.
How many electrons are in F
a)
9
b)
14
c)
18
d)
19
27.
How many neutrons are in F
a)
10
b)
14
c)
18
d)
19
28.
How many protons are in Ne
a)
10
b)
14
c)
16
d)
18
29.
How many electrons are in Ne
a)
10
b)
16
c)
18
d)
20
30.
How many neutrons are in Ne
a)
10
b)
14
c)
18
d)
20
31.
How many protons are in Na
a)
11
b)
12
c)
22
d)
23
32.
How many electrons are in Na
a)
11
b)
12
c)
22
d)
23
33.
How many neutrons are in Na
a)
12
b)
11
c)
22
d)
23
34.
How many protons are in Mg
a)
12
b)
13
c)
24
d)
25
35.
How many electrons are in Mg
a)
12
b)
13
c)
24
d)
25
36.
How many neutrons are in Mg
a)
12
b)
13
c)
24
d)
25
37.
How many protons are in Al
a)
13
b)
14
c)
26
d)
27
38.
How many electrons are in Al
a)
13
b)
14
c)
26
d)
27
39.
How many neutrons are in Al
a)
14
b)
13
c)
26
d)
27
40.
How many protons are in Si
a)
14
b)
15
c)
28
d)
29
41.
How many electrons are in Si
a)
14
b)
15
c)
28
d)
29
42.
How many neutrons are in Si
a)
14
b)
15
c)
28
d)
29
43.
How many protons are in P
a)
15
b)
16
c)
30
d)
31
44.
How many electrons are in P
a)
15
b)
16
c)
30
d)
31
45.
How many neutrons are in P
a)
16
b)
15
c)
30
d)
31
46.
How many protons are in S
a)
16
b)
15
c)
33
d)
32
47.
How many electrons are in S
a)
16
b)
15
c)
33
d)
32
48.
How many neutrons are in S
a)
16
b)
15
c)
33
d)
32
49.
How many protons are in Cl
a)
17
b)
18
c)
35
d)
36
50.
How many electrons are in Cl
a)
17
b)
18
c)
35
d)
36
51.
How many neutrons are in Cl
a)
18
b)
17
c)
35
d)
36
52.
How many protons are in Ar
a)
18
b)
22
c)
21
d)
39
53.
How many electrons are in Ar
a)
18
b)
22
c)
21
d)
40
54.
How many neutrons are in Ar
a)
22
b)
21
c)
39
d)
40
55.
How many protons are in K
a)
19
b)
20
c)
39
d)
40
56.
How many electrons are in K
a)
19
b)
20
c)
39
d)
40
57.
How many neutrons are in K
a)
21
b)
19
c)
39
d)
40
58.
How many protons are in Ca
a)
20
b)
21
c)
40
d)
41
59.
How many electrons are in Ca
a)
20
b)
21
c)
40
d)
41
60.
How many neutrons are in Ca
a)
20
b)
21
c)
40
d)
41
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