452 ENVIRONMENTALENGINJ3ERING
Symbol Atomic number Atomic weight
Europium
Fermium
Fluorine
Francium
Gadolinium
Gallium
Germanium
Gold
Hafnium
Hahnium
Hassium
Helium
Holmium
Hydrogen
Indium
Iodine
Iridium
Iron
Krypton
Lanthanum
Lawrencium
Lead
Lithium
Lutetium
Magnesium
Manganese
Meitnerium
Mendelevium
Mercury
Molybdenum
Neilsborhium
Neodymium
Neon
Neptunium
Nickel
Niobium
Nitrogen
Nobelium
0SmiLln.l
Oxygen
Palladium
Phosphorus
Eu
Fm
F
Fr
Gd
Ga
Ge
Au
Hf
Ha
Hs
He
Ho
H
In
I
Ir
Fe
Kr
La
Lw
Pb
Li
Lu
Mn
Mt
Md
Mo
Ns
Nd
Ne
Ni
Nb
N
No
os
0
Pd
P
Mg
Hg
NP
63
100
9
87
64
31
32
79
72
105
108
2
67
1
49
53
77
26
36
57
103
82
3
71
12
25
109
101
80
42
107
60
10
93
28
41
7
102
76
8
46
15
151.97
19.0
223a
157.25
69.72
72.59
196.97
178.49
b
b
4.0
164.93
1.01
126.9
138.91
192.2
55.85
83.8
138.91
b
207.19
6.94
174.97
24.3 1
54.94
b
b
b
200.59
95.94
b
144.24
20.18
237a
58.71
92.91
14.01
190.2
16.00
106.4
30.97
b
(continued)