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Answers
Answer: H
1.008
Hydrogen
2
He
4.0026
Helium
2
3
Li
6.94
Lithium
4
Be
9.0122
Beryllium
5
B
10.81
Boron
6
C
12.011
Carbon
7
N
14.007
Nitrogen
8
O
15.999
Oxygen
9
F
18.998
Fluorine
10
Ne
20.180
Neon
3
11
Na
22.990
Sodium
12
Mg
24.305
Magnesium
13
Al
26.982
Aluminium
14
Si
28.085
Silicon
15
P
30.974
Phosphorus
16
S
32.06
Sulfur
17
Cl
35.45
Chlorine
18
Ar
39.948
Argon
4
19
K
39.098
Potassium
20
Ca
40.078
Calcium
21
Sc
44.956
Scandium
22
Ti
47.867
Titanium
23
V
50.942
Vanadium
24
Cr
51.996
Chromium
25
Mn
54.938
Manganese
26
Fe
55.845
Iron
27
Co
58.933
Cobalt
28
Ni
58.693
Nickel
29
Cu
63.546
Copper
30
Zn
65.38
Zinc
31
Ga
69.723
Gallium
32
Ge
72.630
Germanium
33
As
74.922
Arsenic
34
Se
78.971
Selenium
35
Br
79.904
Bromine
36
Kr
83.798
Krypton
5
37
Rb
85.468
Rubidium
38
Sr
87.62
Strontium
39
Y
88.906
Yttrium
40
Zr
91.224
Zirconium
41
Nb
92.906
Niobium
42
Mo
95.95
Molybdenum
43
Tc ☢
96.906
Technetium
44
Ru
101.07
Ruthenium
45
Rh
102.91
Rhodium
46
Pd
106.42
Palladium
47
Ag
107.87
Silver
48
Cd
112.41
Cadmium
49
In
114.82
Indium
50
Sn
118.71
Tin
51
Sb
121.76
Antimony
52
Te
127.60
Tellurium
53
I
126.90
Iodine
54
Xe
131.29
Xenon
6
55
Cs
132.91
Caesium
56
Ba
137.33
Barium
*
71
Lu
174.97
Lutetium
72
Hf
178.49
Hafnium
73
Ta
180.95
Tantalum
74
W
183.84
Tungsten
75
Re
186.21
Rhenium
76
Os
190.23
Osmium
77
Ir
192.22
Iridium
78
Pt
195.08
Platinum
79
Au
196.97
Gold
80
Hg
200.59
Mercury
81
Tl
204.38
Thallium
82
Pb
207.2
Lead
83
Bi
208.98
Bismuth
84
Po ☢
208.98
Polonium
85
At ☢
209.99
Astatine
86
Rn ☢
222.02
Radon
7
87
Fr ☢
223.02
Francium
88
Ra ☢
226.03
Radium
**
103
Lr ☢
262.11
Lawrencium
104
Rf ☢
267.12
Rutherfordium
105
Db ☢
270.13
Dubnium
106
Sg ☢
269.13
Seaborgium
107
Bh ☢
270.13
Bohrium
108
Hs ☢
269.13
Hassium
109
Mt ☢
278.16
Meitnerium
110
Ds ☢
281.17
Darmstadtium
111
Rg ☢
281.17
Roentgenium
112
Cn ☢
285.18
Copernicium
113
Nh ☢
286.18
Nihonium
114
Fl ☢
289.19
Flerovium
115
Mc ☢
289.20
Moscovium
116
Lv ☢
293.20
Livermorium
117
Ts ☢
293.21
Tennessine
118
Og ☢
294.21
Oganesson
*Lanthanoids *
57
La
138.91
Lanthanum
58
Ce
140.12
Cerium
59
Pr
140.91
Praseodymium
60
Nd
144.24
Neodymium
61
Pm ☢
144.91
Promethium
62
Sm
150.36
Samarium
63
Eu
151.96
Europium
64
Gd
157.25
Gadolinium
65
Tb
158.93
Terbium
66
Dy
162.50
Dysprosium
67
Ho
164.93
Holmium
68
Er
167.26
Erbium
69
Tm
168.93
Thulium
70
Yb
173.05
Ytterbium
**Actinoids **
89
Ac ☢
227.03
Actinium
90
Th ☢
232.04
Thorium
91
Pa ☢
231.04
Protactinium
92
U ☢
238.03
Uranium
93
Np ☢
237.05
Neptunium
94
Pu ☢
244.06
Plutonium
95
Am ☢
243.06
Americium
96
Cm ☢
247.07
Curium
97
Bk ☢
247.07
Berkelium
98
Cf ☢
251.08
Californium
99
Es ☢
252.08
Einsteinium
100
Fm ☢
257.10
Fermium
101
Md ☢
258.10
Mendelevium
102
No ☢
259.10
Nobelium
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