2
He
Helium
Helium (He)
Atomic Number: 2
Atomic Mass: 4.0026
9
F
Fluorine
Fluorine (F)
Atomic Number: 9
Atomic Mass: 18.998
10
Ne
Neon
Neon (Ne)
Atomic Number: 10
Atomic Mass: 20.180
13
Al
Aluminium
Aluminium (Al)
Atomic Number: 13
Atomic Mass: 26.982
17
Cl
Chlorine
Chlorine (Cl)
Atomic Number: 17
Atomic Mass: 35.45
18
Ar
Argon
Argon (Ar)
Atomic Number: 18
Atomic Mass: 39.948
31
Ga
Gallium
Gallium (Ga)
Atomic Number: 31
Atomic Mass: 69.723
35
Br
Bromine
Bromine (Br)
Atomic Number: 35
Atomic Mass: 79.904
36
Kr
Krypton
Krypton (Kr)
Atomic Number: 36
Atomic Mass: 83.798
49
In
Indium
Indium (In)
Atomic Number: 49
Atomic Mass: 114.82
50
Sn
Tin
Tin (Sn)
Atomic Number: 50
Atomic Mass: 118.71
51
Sb
Antimony
Antimony (Sb)
Atomic Number: 51
Atomic Mass: 121.76
53
I
Iodine
Iodine (I)
Atomic Number: 53
Atomic Mass: 126.90
54
Xe
Xenon
Xenon (Xe)
Atomic Number: 54
Atomic Mass: 131.29
81
Tl
Thallium
Thallium (Tl)
Atomic Number: 81
Atomic Mass: 204.38
82
Pb
Lead
Lead (Pb)
Atomic Number: 82
Atomic Mass: 207.2
83
Bi
Bismuth
Bismuth (Bi)
Atomic Number: 83
Atomic Mass: 208.98
113
Nh
Nihonium
Nihonium (Nh)
Atomic Number: 113
Atomic Mass: [286]
114
Fl
Flerovium
Flerovium (Fl)
Atomic Number: 114
Atomic Mass: [289]
115
Mc
Moscovium
Moscovium (Mc)
Atomic Number: 115
Atomic Mass: [290]
116
Lv
Livermorium
Livermorium (Lv)
Atomic Number: 116
Atomic Mass: [293]
57
La
Lanthanum
Lanthanum (La)
Atomic Number: 57
Atomic Mass: 138.91
58
Ce
Cerium
Cerium (Ce)
Atomic Number: 58
Atomic Mass: 140.12
59
Pr
Praseodymium
Praseodymium (Pr)
Atomic Number: 59
Atomic Mass: 140.91
60
Nd
Neodymium
Neodymium (Nd)
Atomic Number: 60
Atomic Mass: 144.24
61
Pm
Promethium
Promethium (Pm)
Atomic Number: 61
Atomic Mass: [145]
62
Sm
Samarium
Samarium (Sm)
Atomic Number: 62
Atomic Mass: 150.36
63
Eu
Europium
Europium (Eu)
Atomic Number: 63
Atomic Mass: 151.96
64
Gd
Gadolinium
Gadolinium (Gd)
Atomic Number: 64
Atomic Mass: 157.25
65
Tb
Terbium
Terbium (Tb)
Atomic Number: 65
Atomic Mass: 158.93
66
Dy
Dysprosium
Dysprosium (Dy)
Atomic Number: 66
Atomic Mass: 162.50
67
Ho
Holmium
Holmium (Ho)
Atomic Number: 67
Atomic Mass: 164.93
68
Er
Erbium
Erbium (Er)
Atomic Number: 68
Atomic Mass: 167.26
69
Tm
Thulium
Thulium (Tm)
Atomic Number: 69
Atomic Mass: 168.93
70
Yb
Ytterbium
Ytterbium (Yb)
Atomic Number: 70
Atomic Mass: 173.05
71
Lu
Lutetium
Lutetium (Lu)
Atomic Number: 71
Atomic Mass: 174.97
89
Ac
Actinium
Actinium (Ac)
Atomic Number: 89
Atomic Mass: [227]
90
Th
Thorium
Thorium (Th)
Atomic Number: 90
Atomic Mass: 232.04
91
Pa
Protactinium
Protactinium (Pa)
Atomic Number: 91
Atomic Mass: 231.04
92
U
Uranium
Uranium (U)
Atomic Number: 92
Atomic Mass: 238.03
93
Np
Neptunium
Neptunium (Np)
Atomic Number: 93
Atomic Mass: [237]
94
Pu
Plutonium
Plutonium (Pu)
Atomic Number: 94
Atomic Mass: [244]
95
Am
Americium
Americium (Am)
Atomic Number: 95
Atomic Mass: [243]
96
Cm
Curium
Curium (Cm)
Atomic Number: 96
Atomic Mass: [247]
97
Bk
Berkelium
Berkelium (Bk)
Atomic Number: 97
Atomic Mass: [247]
98
Cf
Californium
Californium (Cf)
Atomic Number: 98
Atomic Mass: [251]
99
Es
Einsteinium
Einsteinium (Es)
Atomic Number: 99
Atomic Mass: [252]
100
Fm
Fermium
Fermium (Fm)
Atomic Number: 100
Atomic Mass: [257]
101
Md
Mendelevium
Mendelevium (Md)
Atomic Number: 101
Atomic Mass: [258]
102
No
Nobelium
Nobelium (No)
Atomic Number: 102
Atomic Mass: [259]
103
Lr
Lawrencium
Lawrencium (Lr)
Atomic Number: 103
Atomic Mass: [262]