Visa källa för Förlängda periodiska systemet

'''Förlängda periodiska systemet''' är en tabell över teoretiserade [[grundämne]]n som ännu inte upptäckts.

För närvarande finns det sju [[Periodiska systemets perioder|perioder]] i det [[periodiska systemet]]. Det högsta [[Atomnummer|atomnumret]] som hittills tillskrivits ett [[grundämne]] är [[Ununoctium|118]]. Om ytterligare grundämnen med högre atomnummer upptäcks kommer de att placeras i additionella perioder som illustrerar periodiskt återkommande trender för grundämnenas egenskaper.

De eventuella additionella perioderna förväntas innehålla fler grundämnen än tidigare perioder, eftersom perioderna beräknas ha ett ytterligare [[Periodiska systemets block|block]]. Det så kallade '''g-blocket''' uppskattas innehålla 18 grundämnen med partiellt fyllda g-[[Atomorbital|orbitaler]] i varje period. Den amerikanske kemisten [[Glenn T. Seaborg]] föreslog 1969 ett periodiskt system som innehåller detta block.

<div style="overflow: scroll;">
{| cellpadding="1" cellspacing="1" style="border:none; width:100%; font-size:85%; text-align:center"
|+ '''<big>Förlängda periodiska systemet</big>
|-----
| style="width:8%; color:#F00" | '''1'''
| style="width:5%; background-color:#F69" | 1<br/>[[väte|H]]
| style="width:2%" colspan="48" | 
| style="width:5%; background-color:#F69" | 2<br/>[[helium|He]]
|-----
| style="width:8%; color:#F00" | '''2'''
| style="width:5%; background-color:#F69" | 3<br/>[[litium|Li]]
| style="width:5%; background-color:#F69" | 4<br/>[[beryllium|Be]]
| style="width:2%" colspan="42" | 
| style="width:5%; background-color:#9CF" | 5<br/>[[bor|B]]
| style="width:5%; background-color:#9CF" | 6<br/>[[kol|C]]
| style="width:5%; background-color:#9CF" | 7<br/>[[kväve|N]]
| style="width:5%; background-color:#9CF" | 8<br/>[[syre|O]]
| style="width:5%; background-color:#9CF" | 9<br/>[[fluor|F]]
| style="width:5%; background-color:#9CF" | 10<br/>[[neon|Ne]]
|-----
| style="width:8%; color:#F00" | '''3'''
| style="width:5%; background-color:#F69" | 11<br/>[[natrium|Na]]
| style="width:5%; background-color:#F69" | 12<br/>[[magnesium|Mg]]
| style="width:2%" colspan="42" | 
| style="width:5%; background-color:#9CF" | 13<br/>[[aluminium|Al]]
| style="width:5%; background-color:#9CF" | 14<br/>[[kisel|Si]]
| style="width:5%; background-color:#9CF" | 15<br/>[[fosfor|P]]
| style="width:5%; background-color:#9CF" | 16<br/>[[svavel|S]]
| style="width:5%; background-color:#9CF" | 17<br/>[[klor|Cl]]
| style="width:5%; background-color:#9CF" | 18<br/>[[argon|Ar]]
|-----
| style="width:8%; color:#F00" | '''4'''
| style="width:5%; background-color:#F69" | 19<br/>[[kalium|K]]
| style="width:5%; background-color:#F69" | 20<br/>[[kalcium|Ca]]
| style="width:2%" colspan="32" | 
| style="width:5%; background-color:#CF9" | 21<br/>[[skandium|Sc]]
| style="width:5%; background-color:#CF9" | 22<br/>[[titan (grundämne)|Ti]]
| style="width:5%; background-color:#CF9" | 23<br/>[[vanadin|V]]
| style="width:5%; background-color:#CF9" | 24<br/>[[krom|Cr]]
| style="width:5%; background-color:#CF9" | 25<br/>[[mangan|Mn]]
| style="width:5%; background-color:#CF9" | 26<br/>[[järn|Fe]]
| style="width:5%; background-color:#CF9" | 27<br/>[[kobolt|Co]]
| style="width:5%; background-color:#CF9" | 28<br/>[[nickel|Ni]]
| style="width:5%; background-color:#CF9" | 29<br/>[[koppar|Cu]]
| style="width:5%; background-color:#CF9" | 30<br/>[[zink|Zn]]
| style="width:5%; background-color:#9CF" | 31<br/>[[gallium|Ga]]
| style="width:5%; background-color:#9CF" | 32<br/>[[germanium|Ge]]
| style="width:5%; background-color:#9CF" | 33<br/>[[arsenik|As]]
| style="width:5%; background-color:#9CF" | 34<br/>[[selen|Se]]
| style="width:5%; background-color:#9CF" | 35<br/>[[brom|Br]]
| style="width:5%; background-color:#9CF" | 36<br/>[[krypton|Kr]]
|-----
| style="width:8%; color:#F00" | '''5'''
| style="width:5%; background-color:#F69" | 37<br/>[[rubidium|Rb]]
| style="width:5%; background-color:#F69" | 38<br/>[[strontium|Sr]]
| style="width:2%" colspan="32" | 
| style="width:5%; background-color:#CF9" | 39<br/>[[yttrium|Y]]
| style="width:5%; background-color:#CF9" | 40<br/>[[zirkonium|Zr]]
| style="width:5%; background-color:#CF9" | 41<br/>[[nio|Nb]]
| style="width:5%; background-color:#CF9" | 42<br/>[[molybden|Mo]]
| style="width:5%; background-color:#CF9" | 43<br/>[[teknetium|Tc]]
| style="width:5%; background-color:#CF9" | 44<br/>[[rutenium|Ru]]
| style="width:5%; background-color:#CF9" | 45<br/>[[rodium|Rh]]
| style="width:5%; background-color:#CF9" | 46<br/>[[palladium|Pd]]
| style="width:5%; background-color:#CF9" | 47<br/>[[silver|Ag]]
| style="width:5%; background-color:#CF9" | 48<br/>[[kadmium|Cd]]
| style="width:5%; background-color:#9CF" | 49<br/>[[indium|In]]
| style="width:5%; background-color:#9CF" | 50<br/>[[tenn|Sn]]
| style="width:5%; background-color:#9CF" | 51<br/>[[antimon|Sb]]
| style="width:5%; background-color:#9CF" | 52<br/>[[tellur|Te]]
| style="width:5%; background-color:#9CF" | 53<br/>[[jod|I]]
| style="width:5%; background-color:#9CF" | 54<br/>[[xenon|Xe]]
|-----
| style="width:8%; color:#F00" | '''6'''
| style="width:5%; background-color:#F69" | 55<br/>[[cesium|Cs]]
| style="width:5%; background-color:#F69" | 56<br/>[[barium|Ba]]
| style="width:2%" colspan="18" | 
| style="width:5%; background-color:#6FC" | 57<br/>[[lantan|La]]
| style="width:5%; background-color:#6FC" | 58<br/>[[cerium|Ce]]
| style="width:5%; background-color:#6FC" | 59<br/>[[praseodym|Pr]]
| style="width:5%; background-color:#6FC" | 60<br/>[[neodym|Nd]]
| style="width:5%; background-color:#6FC" | 61<br/>[[prometium|Pm]]
| style="width:5%; background-color:#6FC" | 62<br/>[[samarium|Sm]]
| style="width:5%; background-color:#6FC" | 63<br/>[[europium|Eu]]
| style="width:5%; background-color:#6FC" | 64<br/>[[gadolinium|Gd]]
| style="width:5%; background-color:#6FC" | 65<br/>[[terbium|Tb]]
| style="width:5%; background-color:#6FC" | 66<br/>[[dysprosium|Dy]]
| style="width:5%; background-color:#6FC" | 67<br/>[[holmium|Ho]]
| style="width:5%; background-color:#6FC" | 68<br/>[[erbium|Er]]
| style="width:5%; background-color:#6FC" | 69<br/>[[tulium|Tm]]
| style="width:5%; background-color:#6FC" | 70<br/>[[ytterbium|Yb]]
| style="width:5%; background-color:#CF9" | 71<br/>[[lutetium|Lu]]
| style="width:5%; background-color:#CF9" | 72<br/>[[hafnium|Hf]]
| style="width:5%; background-color:#CF9" | 73<br/>[[tantal|Ta]]
| style="width:5%; background-color:#CF9" | 74<br/>[[volfram|W]]
| style="width:5%; background-color:#CF9" | 75<br/>[[rhenium|Re]]
| style="width:5%; background-color:#CF9" | 76<br/>[[osmium|Os]]
| style="width:5%; background-color:#CF9" | 77<br/>[[iridium|Ir]]
| style="width:5%; background-color:#CF9" | 78<br/>[[platina|Pt]]
| style="width:5%; background-color:#CF9" | 79<br/>[[guld|Au]]
| style="width:5%; background-color:#CF9" | 80<br/>[[kvicksilver|Hg]]
| style="width:5%; background-color:#9CF" | 81<br/>[[thallium|Tl]]
| style="width:5%; background-color:#9CF" | 82<br/>[[bly|Pb]]
| style="width:5%; background-color:#9CF" | 83<br/>[[vismut|Bi]]
| style="width:5%; background-color:#9CF" | 84<br/>[[polonium|Po]]
| style="width:5%; background-color:#9CF" | 85<br/>[[astat|At]]
| style="width:5%; background-color:#9CF" | 86<br/>[[radon|Rn]]
|-----
| style="width:8%; color:#F00" | '''7'''
| style="width:5%; background-color:#F69" | 87<br/>[[francium|Fr]]
| style="width:5%; background-color:#F69" | 88<br/>[[radium|Ra]]
| style="width:2%" colspan="18" | 
| style="width:5%; background-color:#6FC" | 89<br/>[[aktinium|Ac]]
| style="width:5%; background-color:#6FC" | 90<br/>[[torium|Th]]
| style="width:5%; background-color:#6FC" | 91<br/>[[protaktinium|Pa]]
| style="width:5%; background-color:#6FC" | 92<br/>[[uranium|U]]
| style="width:5%; background-color:#6FC" | 93<br/>[[neptunium|Np]]
| style="width:5%; background-color:#6FC" | 94<br/>[[plutonium|Pu]]
| style="width:5%; background-color:#6FC" | 95<br/>[[americium|Am]]
| style="width:5%; background-color:#6FC" | 96<br/>[[curium|Cm]]
| style="width:5%; background-color:#6FC" | 97<br/>[[berkelium|Bk]]
| style="width:5%; background-color:#6FC" | 98<br/>[[californium|Cf]]
| style="width:5%; background-color:#6FC" | 99<br/>[[einsteinium|Es]]
| style="width:5%; background-color:#6FC" | 100<br/>[[fermium|Fm]]
| style="width:5%; background-color:#6FC" | 101<br/>[[mendelevium|Md]]
| style="width:5%; background-color:#6FC" | 102<br/>[[nobelium|No]]
| style="width:5%; background-color:#CF9" | 103<br/>[[lawrencium|Lr]]
| style="width:5%; background-color:#CF9" | 104<br/>[[rutherfordium|Rf]]
| style="width:5%; background-color:#CF9" | 105<br/>[[dubnium|Db]]
| style="width:5%; background-color:#CF9" | 106<br/>[[seaborgium|Sg]]
| style="width:5%; background-color:#CF9" | 107<br/>[[bohrium|Bh]]
| style="width:5%; background-color:#CF9" | 108<br/>[[hassium|Hs]]
| style="width:5%; background-color:#CF9" | 109<br/>[[meitnerium|Mt]]
| style="width:5%; background-color:#CF9" | 110<br/>[[darmstadtium|Ds]]
| style="width:5%; background-color:#CF9" | 111<br/>[[röntgenium|Rg]]
| style="width:5%; background-color:#CF9" | 112<br/>[[copernicium|Cn]]
| style="width:5%; background-color:#9CF" | 113<br/>[[ununtrium|Uut]]
| style="width:5%; background-color:#9CF" | 114<br/>[[flerovium|Fl]]
| style="width:5%; background-color:#9CF" | 115<br/>[[ununpentium|Uup]]
| style="width:5%; background-color:#9CF" | 116<br/>[[livermorium|Lv]]
| style="width:5%; background-color:#9CF" | 117<br/>[[ununseptium|Uus]]
| style="width:5%; background-color:#9CF" | 118<br/>[[ununoctium|Uuo]]
|-----
| style="width:8%; color:#F00" | '''8'''
| style="width:5%; background-color:#FBD" | 119<br/>Uue
| style="width:5%; background-color:#FBD" | 120<br/>Ubn
| style="width:5%; background-color:#FDA" | 121<br/>Ubu
| style="width:5%; background-color:#FDA" | 122<br/>Ubb
| style="width:5%; background-color:#FDA" | 123<br/>Ubt
| style="width:5%; background-color:#FDA" | 124<br/>Ubq
| style="width:5%; background-color:#FDA" | 125<br/>Ubp
| style="width:5%; background-color:#FDA" | 126<br/>Ubh
| style="width:5%; background-color:#FDA" | 127<br/>Ubs
| style="width:5%; background-color:#FDA" | 128<br/>Ubo
| style="width:5%; background-color:#FDA" | 129<br/>Ube
| style="width:5%; background-color:#FDA" | 130<br/>Utn
| style="width:5%; background-color:#FDA" | 131<br/>Utu
| style="width:5%; background-color:#FDA" | 132<br/>Utb
| style="width:5%; background-color:#FDA" | 133<br/>Utt
| style="width:5%; background-color:#FDA" | 134<br/>Utq
| style="width:5%; background-color:#FDA" | 135<br/>Utp
| style="width:5%; background-color:#FDA" | 136<br/>Uth
| style="width:5%; background-color:#FDA" | 137<br/>Uts
| style="width:5%; background-color:#FDA" | 138<br/>Uto
| style="width:5%; background-color:#BFE" | 139<br/>Ute
| style="width:5%; background-color:#BFE" | 140<br/>Uqn
| style="width:5%; background-color:#BFE" | 141<br/>Uqu
| style="width:5%; background-color:#BFE" | 142<br/>Uqb
| style="width:5%; background-color:#BFE" | 143<br/>Uqt
| style="width:5%; background-color:#BFE" | 144<br/>Uqq
| style="width:5%; background-color:#BFE" | 145<br/>Uqp
| style="width:5%; background-color:#BFE" | 146<br/>Uqh
| style="width:5%; background-color:#BFE" | 147<br/>Uqs
| style="width:5%; background-color:#BFE" | 148<br/>Uqo
| style="width:5%; background-color:#BFE" | 149<br/>Uqe
| style="width:5%; background-color:#BFE" | 150<br/>Upn
| style="width:5%; background-color:#BFE" | 151<br/>Upu
| style="width:5%; background-color:#BFE" | 152<br/>Upb
| style="width:5%; background-color:#DFC" | 153<br/>Upt
| style="width:5%; background-color:#DFC" | 154<br/>Upq
| style="width:5%; background-color:#DFC" | 155<br/>Upp
| style="width:5%; background-color:#DFC" | 156<br/>Uph
| style="width:5%; background-color:#DFC" | 157<br/>Ups
| style="width:5%; background-color:#DFC" | 158<br/>Upo
| style="width:5%; background-color:#DFC" | 159<br/>Upe
| style="width:5%; background-color:#DFC" | 160<br/>Uhn
| style="width:5%; background-color:#DFC" | 161<br/>Uhu
| style="width:5%; background-color:#DFC" | 162<br/>Uhb
| style="width:5%; background-color:#CEF" | 163<br/>Uht
| style="width:5%; background-color:#CEF" | 164<br/>Uhq
| style="width:5%; background-color:#CEF" | 165<br/>Uhp
| style="width:5%; background-color:#CEF" | 166<br/>Uhh
| style="width:5%; background-color:#CEF" | 167<br/>Uhs
| style="width:5%; background-color:#CEF" | 168<br/>Uho
|-----
| style="width:8%; color:#F00" | '''9'''
| style="width:5%; background-color:#FBD" | 169<br/>Uhe
| style="width:5%; background-color:#FBD" | 170<br/>Usn
| style="width:5%; background-color:#FDA" | 171<br/>Usu
| style="width:5%; background-color:#FDA" | 172<br/>Usb
| style="width:5%; background-color:#FDA" | 173<br/>Ust
|}
{| align=center
|-
|align=center|'''[[Periodiska systemets block|Block]] i [[periodiska systemet]]'''
|-
|
{| frame="1" cellpadding="8"
|-
|{{legend|#ff6699|[[s-blocket]]|border=1px solid #AAAAAA}}
|{{legend|#99ccff|[[p-blocket]]|border=1px solid #AAAAAA}}
|{{legend|#ccff99|[[d-blocket]]|border=1px solid #AAAAAA}}
|{{legend|#66ffcc|[[f-blocket]]|border=1px solid #AAAAAA}}
|{{legend|#ffcc66|g-blocket    |border=1px solid #AAAAAA}}
|}
|-
|align=center|(Oupptäckta (teoretiserade) grundämnen är färgade med en ljusare nyans)
|}
</div>

== Externa länkar ==
* [http://jeries.rihani.com/ The Extended Periodic Table Of The Elements] {{en ikon}}
* [http://www.uky.edu/~holler/html/g.html g orbitals] {{en ikon}}

[[Kategori:Periodiska systemet]]