WORKSHEET:
Symbol
11
5
39
19
Atomic
Number
Number of
Protons
Number of
Neutrons
15
15
Number of
Electrons
Charge
B0
K+
56
56
26
Mass
Number
Isotopes & Ions
0
137
54
127
54
Fe 2+
10
208
82
10
10
16
18
1-
Pb 0
16
30
65
28
U0
235
92
238
92
3+