Question

define atomic mass unit (amu
)​

Answer 1

Answer:

An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu.

Answer 2

Answer:

a unit of mass to Express atomic and molecular weight ,equals to one twelfth mass of an atom of carbon