Mass number

Atom ke wajan jaada kar ke proton aur neutron se banaa rahe hae. Ek atom ke mass number (symbol A)Jensen, William B. (2005). The Origins of the Symbols A and Z for Atomic Weight and Number. J. Chem. Educ. 82: 1764. link. uske nucleus me jorrke ketna proton aur neutron hae ke baraabar rahe hae. Iske atomic mass number or nucleon number bhi bolaa jaae hae. Ii lagbhag atom ke atomic mass (jiske isotopic mass bhi bolaa jaae hae) ke baraabar hae. Ek atom ke har ek isotope ke mass number different rahe hae. Mass number aur atomic number ke antar ii dekhae hae ki atom me ketnee neutron hae. .

vibhag:M
Category:Chemistry