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Rescuing 15 sources and tagging 0 as dead.) #IABot (v2.0.8
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Add 5 books for Wikipedia:Pemastian (20210209)) #IABot (v2.0.8) (GreenC bot
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| pages=762–786 | doi=10.1021/ja02261a002 }}</ref> Atas adanya keteraturan sifat-sifat kimiawi dalam tabel periode kimia,<ref>{{cite book
|first=Eric R.|last=Scerri|year=2007
|title=The Periodic Table|url=https://archive.org/details/periodictableits00scer|pages=205–226[https://archive.org/details/periodictableits00scer/page/n227 205]–226
|publisher=Oxford University Press US
|isbn=0195305736 }}</ref> kimiawan Amerika [[Irving Langmuir]] tahun 1919 berpendapat bahwa hal ini dapat dijelaskan apabila elektron-elektron pada sebuah atom saling berhubungan atau berkumpul dalam bentuk-bentuk tertentu. Sekelompok elektron diperkirakan menduduki satu set [[kelopak elektron]] di sekitar inti atom.
Baris 944:
* {{cite book
|last=Myers|first=Richard|year=2003
|title=The Basics of Chemistry|url=https://archive.org/details/basicsofchemistr0000myer|publisher=Greenwood Press
|isbn=0313316643
|oclc=50164580 }}
Baris 991:
|last=Sills|first=Alan D.|year=2003
|title=Earth Science the Easy Way
|url=https://archive.org/details/earthscienceeasy00alan|publisher=Barron's Educational Series|isbn=0764121464
|oclc=51543743 }}
* {{cite book
Baris 1.018:
|first=Charles Adolphe|last=Wurtz|year=1881
|title=The Atomic Theory
|url=https://archive.org/details/atomictheory02wurtgoog|publisher=D. Appleton and company
|location=New York }}
* {{cite book
|last=Zaider|first=Marco|coauthors=Rossi, Harald H.|year=2001
|title=Radiation Science for Physicians and Public Health Workers
|url=https://archive.org/details/radiationscience0000zaid|publisher=Springer|isbn=0306464039
|oclc=44110319 }}
* {{cite book