List of the 118 Elements of the Mendeleev Periodic Table
The periodic table arranges the chemical elements by atomic number. This page lists all 118 known elements with their name, symbol, atomic number, atomic mass and category; click a name to see its properties, electron configuration and uses, or use the interactive periodic table.
Browse by group and period
Periodic table groups
Group 1Group 2Group 3Group 4Group 5Group 6Group 7Group 8Group 9Group 10Group 11Group 12Group 13Group 14Group 15Group 16Group 17Group 18
Periodic table periods
Alkali metals (6 elements)
The alkali metals are the group 1 elements (excluding hydrogen): soft, shiny and highly reactive metals that react violently with water and are never found free in nature.
Lithium (Li)Sodium (Na)Potassium (K)Rubidium (Rb)Cesium (Cs)Francium (Fr)
Alkaline earth metals (6 elements)
The alkaline earth metals are the group 2 elements: reactive metals, harder than the alkali metals and with higher melting points, that usually form ions with a +2 charge.
Beryllium (Be)Magnesium (Mg)Calcium (Ca)Strontium (Sr)Barium (Ba)Radium (Ra)
Transition metals (38 elements)
The transition metals are the d-block elements: usually good conductors of heat and electricity, with several oxidation states, and they form colourful compounds and important catalysts.
Scandium (Sc)Titanium (Ti)Vanadium (V)Chromium (Cr)Manganese (Mn)Iron (Fe)Cobalt (Co)Nickel (Ni)Copper (Cu)Zinc (Zn)Yttrium (Y)Zirconium (Zr)Niobium (Nb)Molybdenum (Mo)Technetium (Tc)Ruthenium (Ru)Rhodium (Rh)Palladium (Pd)Silver (Ag)Cadmium (Cd)Hafnium (Hf)Tantalum (Ta)Tungsten (W)Rhenium (Re)Osmium (Os)Iridium (Ir)Platinum (Pt)Gold (Au)Mercury (Hg)Rutherfordium (Rf)Dubnium (Db)Seaborgium (Sg)Bohrium (Bh)Hassium (Hs)Meitnerium (Mt)Darmstadtium (Ds)Roentgenium (Rg)Copernicium (Cn)
Lanthanides (15 elements)
The lanthanides are the 15 elements from lanthanum to lutetium, part of the f-block, with very similar chemical properties; they are often grouped among the “rare earths”.
Lanthanum (La)Cerium (Ce)Praseodymium (Pr)Neodymium (Nd)Promethium (Pm)Samarium (Sm)Europium (Eu)Gadolinium (Gd)Terbium (Tb)Dysprosium (Dy)Holmium (Ho)Erbium (Er)Thulium (Tm)Ytterbium (Yb)Lutetium (Lu)
Actinides (15 elements)
The actinides are the 15 elements from actinium to lawrencium, part of the f-block, and all of them are radioactive.
Actinium (Ac)Thorium (Th)Protactinium (Pa)Uranium (U)Neptunium (Np)Plutonium (Pu)Americium (Am)Curium (Cm)Berkelium (Bk)Californium (Cf)Einsteinium (Es)Fermium (Fm)Mendelevium (Md)Nobelium (No)Lawrencium (Lr)
Post-transition metals (12 elements)
The p-block metals (the post-transition metals) are usually softer than the transition metals and have lower melting points.
Aluminum (Al)Gallium (Ga)Indium (In)Tin (Sn)Thallium (Tl)Lead (Pb)Bismuth (Bi)Polonium (Po)Nihonium (Nh)Flerovium (Fl)Moscovium (Mc)Livermorium (Lv)
Metalloids (6 elements)
The metalloids have properties between metals and nonmetals, and many of them are semiconductors.
Boron (B)Silicon (Si)Germanium (Ge)Arsenic (As)Antimony (Sb)Tellurium (Te)
Nonmetals (7 elements)
The nonmetals are usually poor conductors of heat and electricity and are brittle in solid form; they are the base elements of organic and biological chemistry.
Hydrogen (H)Carbon (C)Nitrogen (N)Oxygen (O)Phosphorus (P)Sulfur (S)Selenium (Se)
Halogens (6 elements)
The halogens are the group 17 elements: highly reactive nonmetals that form salt compounds with metals.
Fluorine (F)Chlorine (Cl)Bromine (Br)Iodine (I)Astatine (At)Tennessine (Ts)
Noble gases (7 elements)
The noble gases are the group 18 elements: their outer shell is full, so under normal conditions they are very unreactive.
Helium (He)Neon (Ne)Argon (Ar)Krypton (Kr)Xenon (Xe)Radon (Rn)Oganesson (Og)
Table of all elements
| Atomic no. | Symbol | Name | Atomic mass | Category |
|---|---|---|---|---|
| 1 | H | Hydrogen | 1.008 | Nonmetal |
| 2 | He | Helium | 4.0026 | Noble gas |
| 3 | Li | Lithium | 6.94 | Alkali metal |
| 4 | Be | Beryllium | 9.0122 | Alkaline earth metal |
| 5 | B | Boron | 10.81 | Metalloid |
| 6 | C | Carbon | 12.011 | Nonmetal |
| 7 | N | Nitrogen | 14.007 | Nonmetal |
| 8 | O | Oxygen | 15.999 | Nonmetal |
| 9 | F | Fluorine | 18.998 | Halogen |
| 10 | Ne | Neon | 20.18 | Noble gas |
| 11 | Na | Sodium | 22.99 | Alkali metal |
| 12 | Mg | Magnesium | 24.305 | Alkaline earth metal |
| 13 | Al | Aluminum | 26.982 | Metal |
| 14 | Si | Silicon | 28.085 | Metalloid |
| 15 | P | Phosphorus | 30.974 | Nonmetal |
| 16 | S | Sulfur | 32.06 | Nonmetal |
| 17 | Cl | Chlorine | 35.45 | Halogen |
| 18 | Ar | Argon | 39.95 | Noble gas |
| 19 | K | Potassium | 39.098 | Alkali metal |
| 20 | Ca | Calcium | 40.078 | Alkaline earth metal |
| 21 | Sc | Scandium | 44.956 | Transition metal |
| 22 | Ti | Titanium | 47.867 | Transition metal |
| 23 | V | Vanadium | 50.942 | Transition metal |
| 24 | Cr | Chromium | 51.996 | Transition metal |
| 25 | Mn | Manganese | 54.938 | Transition metal |
| 26 | Fe | Iron | 55.845 | Transition metal |
| 27 | Co | Cobalt | 58.933 | Transition metal |
| 28 | Ni | Nickel | 58.693 | Transition metal |
| 29 | Cu | Copper | 63.546 | Transition metal |
| 30 | Zn | Zinc | 65.38 | Transition metal |
| 31 | Ga | Gallium | 69.723 | Metal |
| 32 | Ge | Germanium | 72.63 | Metalloid |
| 33 | As | Arsenic | 74.922 | Metalloid |
| 34 | Se | Selenium | 78.96 | Nonmetal |
| 35 | Br | Bromine | 79.904 | Halogen |
| 36 | Kr | Krypton | 83.798 | Noble gas |
| 37 | Rb | Rubidium | 85.468 | Alkali metal |
| 38 | Sr | Strontium | 87.62 | Alkaline earth metal |
| 39 | Y | Yttrium | 88.906 | Transition metal |
| 40 | Zr | Zirconium | 91.224 | Transition metal |
| 41 | Nb | Niobium | 92.906 | Transition metal |
| 42 | Mo | Molybdenum | 95.95 | Transition metal |
| 43 | Tc | Technetium | 98 | Transition metal |
| 44 | Ru | Ruthenium | 101.07 | Transition metal |
| 45 | Rh | Rhodium | 102.91 | Transition metal |
| 46 | Pd | Palladium | 106.42 | Transition metal |
| 47 | Ag | Silver | 107.87 | Transition metal |
| 48 | Cd | Cadmium | 112.41 | Transition metal |
| 49 | In | Indium | 114.82 | Metal |
| 50 | Sn | Tin | 118.71 | Metal |
| 51 | Sb | Antimony | 121.76 | Metalloid |
| 52 | Te | Tellurium | 127.6 | Metalloid |
| 53 | I | Iodine | 126.9 | Halogen |
| 54 | Xe | Xenon | 131.29 | Noble gas |
| 55 | Cs | Cesium | 132.91 | Alkali metal |
| 56 | Ba | Barium | 137.33 | Alkaline earth metal |
| 57 | La | Lanthanum | 138.91 | Lanthanide |
| 58 | Ce | Cerium | 140.12 | Lanthanide |
| 59 | Pr | Praseodymium | 140.91 | Lanthanide |
| 60 | Nd | Neodymium | 144.24 | Lanthanide |
| 61 | Pm | Promethium | 145 | Lanthanide |
| 62 | Sm | Samarium | 150.36 | Lanthanide |
| 63 | Eu | Europium | 151.96 | Lanthanide |
| 64 | Gd | Gadolinium | 157.25 | Lanthanide |
| 65 | Tb | Terbium | 158.93 | Lanthanide |
| 66 | Dy | Dysprosium | 162.5 | Lanthanide |
| 67 | Ho | Holmium | 164.93 | Lanthanide |
| 68 | Er | Erbium | 167.26 | Lanthanide |
| 69 | Tm | Thulium | 168.93 | Lanthanide |
| 70 | Yb | Ytterbium | 173.05 | Lanthanide |
| 71 | Lu | Lutetium | 174.97 | Lanthanide |
| 72 | Hf | Hafnium | 178.49 | Transition metal |
| 73 | Ta | Tantalum | 180.95 | Transition metal |
| 74 | W | Tungsten | 183.84 | Transition metal |
| 75 | Re | Rhenium | 186.21 | Transition metal |
| 76 | Os | Osmium | 190.23 | Transition metal |
| 77 | Ir | Iridium | 192.22 | Transition metal |
| 78 | Pt | Platinum | 195.08 | Transition metal |
| 79 | Au | Gold | 196.97 | Transition metal |
| 80 | Hg | Mercury | 200.59 | Transition metal |
| 81 | Tl | Thallium | 204.38 | Metal |
| 82 | Pb | Lead | 207.2 | Metal |
| 83 | Bi | Bismuth | 208.98 | Metal |
| 84 | Po | Polonium | 209 | Metal |
| 85 | At | Astatine | 210 | Halogen |
| 86 | Rn | Radon | 222 | Noble gas |
| 87 | Fr | Francium | 223 | Alkali metal |
| 88 | Ra | Radium | 226 | Alkaline earth metal |
| 89 | Ac | Actinium | 227 | Actinide |
| 90 | Th | Thorium | 232.04 | Actinide |
| 91 | Pa | Protactinium | 231.04 | Actinide |
| 92 | U | Uranium | 238.03 | Actinide |
| 93 | Np | Neptunium | 237 | Actinide |
| 94 | Pu | Plutonium | 244 | Actinide |
| 95 | Am | Americium | 243 | Actinide |
| 96 | Cm | Curium | 247 | Actinide |
| 97 | Bk | Berkelium | 247 | Actinide |
| 98 | Cf | Californium | 251 | Actinide |
| 99 | Es | Einsteinium | 252 | Actinide |
| 100 | Fm | Fermium | 257 | Actinide |
| 101 | Md | Mendelevium | 258 | Actinide |
| 102 | No | Nobelium | 259 | Actinide |
| 103 | Lr | Lawrencium | 262 | Actinide |
| 104 | Rf | Rutherfordium | 267 | Transition metal |
| 105 | Db | Dubnium | 268 | Transition metal |
| 106 | Sg | Seaborgium | 269 | Transition metal |
| 107 | Bh | Bohrium | 270 | Transition metal |
| 108 | Hs | Hassium | 269 | Transition metal |
| 109 | Mt | Meitnerium | 278 | Transition metal |
| 110 | Ds | Darmstadtium | 281 | Transition metal |
| 111 | Rg | Roentgenium | 282 | Transition metal |
| 112 | Cn | Copernicium | 285 | Transition metal |
| 113 | Nh | Nihonium | 286 | Metal |
| 114 | Fl | Flerovium | 289 | Metal |
| 115 | Mc | Moscovium | 290 | Metal |
| 116 | Lv | Livermorium | 293 | Metal |
| 117 | Ts | Tennessine | 294 | Halogen |
| 118 | Og | Oganesson | 294 | Noble gas |