Question

pls give differnce bw atomic mass , atomic weight , atomic no. , mass no. , molecular mass​

Answer 1

Answer:

Atomic mass : The atomic mass is the mass of an atom. Its unit is the dalton where 1 dalton is defined as ¹⁄₁₂ of the mass of a single carbon-12 atom, at rest. The protons and neutrons of the nucleus account for nearly all of the total mass of atoms, with the electrons and nuclear binding energy making minor contributions.

Atomic weight : 'Relative atomic mass' or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass constant. The atomic mass constant is defined as being of the mass of a carbon-12 atom.

Atomic Number : The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.

Mass number : The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.

Molecular Mass : Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule. The molecular mass gives the mass of a molecule relative to that of the 12C atom, which is taken to have a mass of 12

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