An Vosen Beriodek

An Vosen Beriodek ew rol a elvednow kemyk. E’n Vosen, settyes ew an elvednow en aray aga niver atomek ow talla gen niver onan, hidrojen. Niver atomek elven ew an keth tra ha'n niver a brotonow en nuklesen po sprusen an atom na. E’n Vosen Beriodek renkys ew an elvednow en periodow ha bagasow. Gelwys ew rew elvednow a-dreus dhe’n vosen period. Ema dhe bub period niver, a 1 dhe 8. Ema dhe Beriod 1 diw elven en udnik: hidrojen ha heliom. Ema dhe Beriod 2 ha Period 3 eth elven. Hirra ew periodow erel. Ema dhe’n elvednow en period niverow atomek en eyl onan en moy woja y gila.

Gelwys ew koloven elvednow dhe'n dor mosen bagas. Ema 18 bagas e’n vosen beriodek savonek.  Ema dhe bub bagas niver: a 1 dhe 18. Elvednow en bagas a renk aga elektronow en fordhow haval, hag ema hebma ow rei gnasow kemyk haval dhe anjei, h.y. ma anjei owth omdhegi en for'ow haval. Rag ensampel, aswonys ew bagas 18 avel gassys nobyl drefen aga bos gassys oll ha ny wra anjei kesunya gen atomow erel. 

Usys ew an vosen beriodek gen kemygydhyon rag gweles patronyow ha perthynyansow ynter elvednow. Ema tri chif bagas e’n Vosen Beriodek; olkenyow, olkanoydow, ha diolkenyow. Rag ensampel, elvednow a-bell war askel gledh ha war woles an vosen ew an moyha metelyek, hag elvednow war an dheghow a-wartha ew an lyha metelyek. Ema lies patron ha perthynyans aral ewedh. 

Devisys veu an vosen beriodek gen an kemygydh a Russi Dmitry Ivanovich Mendeleyev (1834-1907). Dh’y enora, henwys veu elven 101 mendeleviom.

 Mosen Beriodek Savonek 
 Bagas →123456789101112131415161718 Period ↓11H2He23Li4Be5B6C7N8O9F10Ne311Na12Mg13Al14Si15P16S17Cl18Ar419K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr537Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe655Cs56Ba*
Lanthanidow72Hf73Ta74W75Re76Os77Ir78Pt79Au</td>80Hg81Tl82Pb83Bi84Po85At86Rn787 Fr88Ra**
Aktinidow104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og8119 Uue120 Ubn***
Superaktinidow158Upo159Upe160Uhn161Uhu162Uhb163Uht164Uhq165Uhp166Uhh167Uhs168Uho169Uhe170Usn171Usu172Usb9173 Ust174 Usq***
Eka-superaktinidow212Bub213But214Buq215Bup216Buh217Bus10227 Bbs228 Bbo* Lanthanidow57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu** Aktinidow89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr*** Superaktinidow143Uqt144Uqq145Uqp146Uqh147Uqs148Uqo149Uqe150Upn151Upu152Upb153Upt154Upq155Upp156Uph157Ups

*** Superaktinidow121Ubu122Ubb123Ubt124Ubq125Ubp126Ubh127Ubs128Ubo129Ube130Utn131Utu132Utb133Utt134Utq135Utp136Uth137Uts138Uto139Ute140Uqn141Uqu142Uqb

Kevresyow Kymyk an Vosen Beriodek

 Olkenyow lisliwen
 Olkenyow dor lisliwennek
 Lanthanidow
 Aktinidow
 Superaktinidow
 Eka-superaktinidow
 Olkenyow tremenyans
 Olkenyow boghes
 Olkanoydow/Hanter-olkenyow
 Diolkenyow 
 Halojenow
 Gassys nobyl 

Studh en tempredh ha gwaskedh savonek. Liw an niver  (niver atomek) a-ugh dhe arwodh an elven a dhiskwedh studh an elven en studhyow normal.
 an re en  glas ew gassys
 an re en  gwyrdh ew linyow
 an re en  du ew soled

Radyoweythresans
An re gen emlow soled y’s teves isotopow sad (Elvennow a’n dallethvos)

 Ema dhe'n re gen emlow terrys isotopow radyoweythresek kevys en naturel
 Ny hwer an re gen emlow dyjynnek en naturel (Elvednow synthetek)
 Re radyoweythresek dhe vos diskudhys hwath ew an re heb emlow