Answer to Question #10737 in Inorganic Chemistry for trishla

Question

acc.to latest concept mass of atom is??

Answer 1

Mass of atom, or atomic mass, is the quantity of matter contained in an atom of
an element. It is expressed as a multiple of one-twelfth the mass of the
carbon-12 atom, 1.99264648 × 10−23 gram, which is assigned an atomic mass of 12
units. In this scale 1 atomic mass unit (amu) corresponds to 1.66053878 × 10−24
gram. The observed atomic mass is slightly less than the sum of the masses of
the protons, neutrons, and electrons that make up the atom. The difference,
called the mass defect, is accounted for during the combination of these
particles by conversion into binding energy.