Subatomic Particles, Mass Number, Atomic Number, and Ion Charges Worksheet
Date:____________________
Name:________________________
Fill in the following tables with the appropriate symbol, number, or charge. An example is
below.
Symbol
Na
He
Atomic #
11
2
Protons
11
2
Electrons
10
2
Neutrons
12
2
Mass #
23
4
Charge
+1
0
Table 1: (Assume all atoms are neutral)
Symbol
Atomic #
Protons
Electrons
Neutrons
O
Mass #
17
20
40
13
14
7
H
14
0
Table 2: (Atoms and ions are present)
Symbol
Atomic #
Protons
C
Electrons
Neutrons
6
6
17
12
S
10
12
28
30
18
Mass #
Charge
35
-1
+1
32
Subatomic Particles, Mass Number, Atomic Number, and Ion Charges Worksheet
Date:____________________
Name:__________KEY__________
Fill in the following tables with the appropriate symbol, number, or charge. An example is
below.
Symbol
Na
He
Atomic #
11
2
Protons
11
2
Electrons
10
2
Neutrons
12
2
Mass #
23
4
Charge
+1
0
Table 1: (Assume all atoms are neutral)
Symbol
Atomic #
Protons
Electrons
Neutrons
Mass #
O
8
8
8
9
17
Ca
20
20
20
20
40
Al
13
13
13
14
27
N
7
7
7
7
14
H
1
1
1
0
1
Table 2: (Atoms and ions are present)
Symbol
Atomic #
Protons
Electrons
Neutrons
Mass #
Charge
C
6
6
6
6
12
0
Cl
17
17
18
18
35
-1
Mg
12
12
10
12
24
+2
Cu
29
29
28
30
59
+1
S
16
16
18
16
32
-2