EL - Atomic Structure Flashcards
what is the location, relative mass and relative charge of the proton?
location - nucleus
R mass - 1
R charge - +1
what is the location, relative mass, relative charge of the electron?
location - orbitals
R mass - 1
R charge - -1
what is the location, relative mass, relative charge of the neutron?
location - nucleus
R mass - 1/1800
R charge - 0
what is the atomic number (Z)?
the number of protons in the nucleus
what is the mass number (A)?
total number of protons and neutrons in the atom
how do you calculate the number of neutrons?
A - Z = neutrons
what is an isotope?
atoms of the same element with the same number of protons but different number of neutrons
similar chem properties as same electronic structure
slightly varying physical properties due to dif mass
what is the relative isotopic mass?
mass of 1 isotope compared to 1/12th of the mass of 12-c atom
what is the relative atomic mass?
weighted mean mass of one atom compared to 1/12th of the mass of 1 12-c atom
what is the relative molecular mass?
average mass of a molecule compared to 1/12th of the mass of 1 12-c atom
how do you calculate the relative atomic mass of an element?
if % abundance is used
R.A.M = ∑(isotopic mass x % abundance) / 100
how do you calculate relative atomic mass?
if relative abundance is used
R.A.M = ∑(isotopic mass x relative abudance) / total relative abundance
