Question

Which quantity is used to define 1 atomic mass unit?(1 point)
Responses

one-sixteenth the mass of a neutral oxygen atom
one-sixteenth the mass of a neutral oxygen atom

one-twelfth the mass of a neutral carbon atom
one-twelfth the mass of a neutral carbon atom

one-sixteenth the mass of a neutral carbon atom
one-sixteenth the mass of a neutral carbon atom

the mass of one neutral hydrogen atom

Answer 1

the mass of one neutral hydrogen atom