What is Dalton (unit)?
The '''dalton''' or '''unified atomic mass unit''', abbreviated as '''u''', '''amu''' or '''[[John Dalton#Dalton's atomic theory|Da]]''') is a [[unit of measurement]] for [[Measurement|measuring]] the [[Atomic mass|mass of atoms]], equalling ¹⁄₁₂ of the [[mass]] of the [[carbon-12]] [[isotope]], the most [[Abundance of chemical elements|abundant]] form of [[carbon]] atoms in nature.<ref> * {{cite book |title=Quantities, Units and Symbols in Physical Chemistry International Union of Pure and Applied Chemistry; Physical Chemistry Division |url = http://www.iupac.org/publications/books/gbook/green_book_2ed.pdf |publisher=International Union of Pure and Applied Chemistry and published for them by Blackwell Science Ltd |edition=2nd |year=1993 |first1=Ian|last1=Mills |first2=Tomislav|last2= Cvitaš |first3=Klaus|last3=Homann |first4= Nikola|last4= Kallay |first5= Kozo |last5=Kuchitsu |isbn=0-632-03583-8}} * {{cite web|url=http://www.bipm.org/utils/common/pdf/CCU15.pdf|title=Consultative Committee for Units (CCU); Report of the 15th meeting (17 –18 April 2003) to the International Committee for Weights and Measures|archive-url=https://web.archive.org/web/20110607031835/http://www.bipm.org/utils/common/pdf/CCU15.pdf|archive-date=7 June 2011|access-date=14 Aug 2010|url-status=dead}} * {{cite web|url=http://www.iupap.org/commissions/interunion/iu14/ga-05.html|title=IU14. IUPAC Interdivisional Committee on Nomenclature and Symbols (ICTNS)|access-date=2010-08-14|archive-date=2011-06-14|archive-url=https://web.archive.org/web/20110614221857/http://www.iupap.org/commissions/interunion/iu14/ga-05.html|url-status=dead}}</ref> ==History== The unit is named after [[English people|English]] [[chemist]] and [[Physicist|physicst]] [[John Dalton]] (1766 – 1844). 1 atomic mass unit is [[Approximation|approximately]] 1.66 [[Multiplication|×]] 10<sup>-27</sup> [[Kilogram|kg]], or 1.66 [[Multiplication|×]] 10<sup>-24</sup> [[Gram|g]].<ref>{{cite web |website=[[Britannica]] | title=Atomic mass unit {{!}} Definition, Description, Uses, &