Atomic Mass Formula
Mass of one atom of an elements called atomic mass.
Contents
OR
The total number of protons and neutron in an atom.
OR
The atomic mass is expressed to how many times an atom of substance is heavier Than 1/12th . Mass of carbon -12 atom.
- In 1961 for a universally accepted atomic mass unit carbon-12 isotope chooses as a standard reference for measuring atomic mass.
- Carbon-12 is presents in abundantly ( large numbers) in everywhere.
- Carbon-12 are moderately reactive.
- How the value of carbon-12 1/12 are 1.6605×10-24
1 amu or 1 u = 1/12 ×mass of 12C atom
= 1/12× 1.9926 ×10-24
1 amu or 1 u = 1.6605×10-24
Formula:
- For example atomic mass of hydrogen ,
Formula
Mass of one atom of hydrogen = 1.673× 10-24
Mass of one atom of C-12 = 1.6605×10-24
So put the value in formula,