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In 1803 Dalton suggested 1H as the basic unit for the atomic mass unit(amu). Ostwald recommended 1/16 mass of Oxygen. However, this suggestion was made before the isotopes 17O an 18O were discovered. Since 1961, the unit is based on 1/12 mass of 12C.

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What nuclide is used as the standard in the relative scale for atomic masses and What is it's assigned atomic mass?

Carbon-12 (12C) is used as the standard in the relative scale for atomic masses, and its assigned atomic mass is 12 atomic mass units.


What nuclide is used as standard relative scale for atomic masses?

Carbon-12 is used as the standard relative scale for atomic masses. This is defined as having a mass of exactly 12 atomic mass units (u). Other elements are compared to this standard to determine their atomic masses.


Is this statement true or false The isotope hydrogen-1 is the standard used for the relative scale of atomic masses?

True. Hydrogen-1, also known as protium, is the standard used for the relative scale of atomic masses. Its mass is defined as exactly 1 atomic mass unit (amu) on the atomic mass scale.


Why is the atomic mass scale also called the relative atomic mass scale?

All atomic masses are determined by comparing them to the mass of an atom of carbon12. One atomic mass unit equals one twelfth the mass of an atom of carbon12. That's why its called relativeatomic mass.


What isotope serves as the current standard for the atomic mass scale?

with C14 atom


What was the atomic mass unit system devised to make?

The atomic mass unit system was devised to accurately describe the mass of atoms and subatomic particles on a consistent scale. It provides a unified standard for expressing relative atomic masses of elements based on the carbon-12 isotope.


How does a relative major scale begin?

A relative major scale begins on the same note as its relative minor scale, but starts on a different degree of the scale.


Which atom is used as the standard for the atom mass scale?

This is an isotope of carbon (carbon-12); after the rules of IUPAC the correct expression is atomic weight not atomic mass.


The atomic weight scale is based upon international agreement that?

the atomic weight scale is based upon the relative atomic masses of elements compared to carbon-12, which has an assigned value of 12. This standardization allows for consistency and accuracy in comparing the masses of different elements.


What is the weight of cesium?

Ceasium is a metal element. Atomic mass of it is 133.


What type of atom is the standard on which the atomic mass scale is based?

The most common isotope of carbon; known as Carbon 12.


Is the car and ramp system a macroscopic scale system or an atomic scale system?

a atomic scale system