- Collection
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- turn
- 1
- 2 He Helium 4.0026
- 2
- 3 Li Lithium 6.94
- 4 Be Beryllium 9.012
-
C solid stateHg liquid stateH gaseous stateRf unknown
- 9 F Fluorine 18.998
- 10 Ne Neon 20.179
- 3
- 11 Na Sodium 22.989
- 12 Mg Magnesium 24.305
- 13 Al Aluminium 26.981
- 17 Cl Chlorine 35.452
- 18 Ar Argon 39.948
- 4
- 19 K Potassium 39.098
- 20 Ca Calcium 40.078
- 21 Sc Scandium 44.955
- 22 Ti Titanium 47.88
- 23 V Vanadium 50.941
- 24 Cr Chromium 51.996
- 25 Mn Manganese 54.938
- 26 Fe Iron 55.847
- 27 Co Cobalt 58.933
- 28 Ni Nickel 58.69
- 29 Cu Copper 63.546
- 30 Zn Zinc 65.39
- 31 Ga Gallium 69.723
- 35 Br Bromine 79.904
- 36 Kr Krypton 83.8
- 5
- 37 Rb Rubidium 85.467
- 38 Sr Strontium 87.62
- 39 Y Yttrium 88.905
- 40 Zr Zirconium 91.224
- 41 Nb Niobium 92.906
- 42 Mo Molybdenum 95.94
- 43 Tc Technetium 98.906
- 44 Ru Ruthenium 101.07
- 45 Rh Rhodium 102.905
- 46 Pd Palladium 106.42
- 47 Ag Silver 107.868
- 48 Cd Cadmium 112.411
- 49 In Indium 114.82
- 50 Sn Tin 118.71
- 53 I Iodine 126.904
- 54 Xe Xenon 131.29
- 6
- 55 Cs Caesium 132.905
- 56 Ba Barium 137.327
- La-Lu *
- 72 Hf Hafnium 178.4
- 73 Ta Tantalum 180.9479
- 74 W Tungsten 183.85
- 75 Re Rhenium 186.207
- 76 Os Osmium 190.2
- 77 Ir Iridium 192.22
- 78 Pt Platinum 195.08
- 79 Au Gold 196.966
- 80 Hg Mercury 200.59
- 81 Tl Thallium 204.383
- 82 Pb Lead 207.2
- 83 Bi Bismuth 208.980
- 85 At Astatine 209.987
- 86 Rn Radon 222.017
- 7
- 87 Fr Francium 223.0197
- 88 Ra Radium 226.025
- Ac-Lr **
- 104 Rf Rutherfordium 261.108
- 105 Db Dubnium 262.113
- 106 Sg Seaborgium 263.118
- 107 Bh Bohrium 262.122
- 108 Hs Hassium 265
- 109 Mt Meitnerium 266
- 110 Ds Darmstadtium 269
- 111 Rg Roentgenium 272
- 112 Cn Copernicium 277
- 113 Nh Nihonium -
- 114 Fl Flerovium -
- 115 Mc Moscovium -
- 116 Lv Livermorium -
- 117 Ts Tennessine -
- 118 Og Oganesson -
- 6
- lanthanides *
- 57 La Lanthanum 138.905
- 58 Ce Cerium 140.115
- 59 Pr Praseodymium 140.907
- 60 Nd Neodymium 144.24
- 61 Pm Promethium 146.915
- 62 Sm Samarium 150.36
- 63 Eu Europium 151.965
- 64 Gd Gadolinium 157.25
- 65 Tb Terbium 158.925
- 66 Dy Dysprosium 162.5
- 67 Ho Holmium 164.930
- 68 Er Erbium 167.26
- 69 Tm Thulium 168.934
- 70 Yb Ytterbium 173.04
- 71 Lu Lutetium 174.967
- 7
- actinides **
- 89 Ac Actinium 227.027
- 90 Th Thorium 232.038
- 91 Pa Protactinium 231.035
- 92 U Uranium 238.028
- 93 Np Neptunium 237.048
- 94 Pu Plutonium 244.064
- 95 Am Americium 243.061
- 96 Cm Curium 247.070
- 97 Bk Berkelium 247.070
- 98 Cf Californium 251.079
- 99 Es Einsteinium 252.082
- 100 Fm Fermium 257.095
- 101 Md Mendelevium 258.098
- 102 No Nobelium 259.100
- 103 Lr Lawrencium 260.105
Symbol
H
Atomic Number
1
Atomic Mass
100794
Status at
Gas
Energy Levels
K=1, L=0, M=0, N=0, O=0
Electronegativity
2.2
Melting Point
-259.1
Boiling Point
14.01
Specific Heat
14.304
Sub-Level
Symbol Origin
Density at 20 °C
0.000084
Electronic Distribution
1s1
First Ionization Energy
1312
First Electron Affinity
-48
Recommended Wavelength
Year Of Discovery
Being In Nature
Discovery
Oxidation States
X-Ray Energies
-
Number Of Isotopes
7
Radius
25