Atomic masses Flashcards
What is relative isotopic mass?
The mass of an isotope compared with one twelfth of the mass of an atom of carbon-12
What is relative atomic mass?
The weighted mean mass of an atom of an element compared with one twelfth of the mass of carbon-12
How do you work out the relative abundance of an isotope when there is not a scale for abundance?
Measure the height of all the bars to find the total height. Then, for each isotope divide the height of its bar by the total height and multiply by 100 to get a percentage
What is relative molecular mass?
The weighted mean mass of a molecule compared with one twelfth of the mass of an atom of carbon-12
What is relative formula mass?
The weighted mean mass of a formula unit compared with one twelfth of the mass of an atom of carbon-12
