Atomic Structure and Isotopes Flashcards
What is an Isotope?
Atoms of the same element with different numbers of neutrons and different masses (but same number of protons and electrons)
What is an Ion?
An atom or molecule with a net electric charge to a loss/gain of one or more electrons
What is the atomic number?
The number of protons in the nucleus of the atom
What is the mass number?
The number of protons and neutrons in an atom
What is the ionic charge?
The charge on an ion
What is relative isotopic mass?
The mass compared with 1/12th mass of carbon-12
What is relative atomic mass?
The weighted mean mass compared with 1/12th mass of carbon-12
What is the equation for relative atomic mass?
the sum of the individual mass multiplied by their abundance
What is relative molecular/formula mass?
The ratio of the average mass of one molecule of an element or compound to one twelfth of the mass of an atom of carbon-12
