'One atomic mass unit equals 1/12 the mass of an atom of the most common isotope of this element'
carbon
THAT'S ELEMENT-ARY: One atomic mass unit equals 1/12 the mass of an atom of the most common isotope of this element
One atomic mass unit equals 1/12 the mass of an atom of the most common isotope of this element
One atomic mass unit equals 1/12 the mass of an atom of the most common isotope of this element
THAT'S ELEMENT-ARY
carbon
THAT'S ELEMENT-ARY