Save
chemistry
Atomic structure
structure of atoms and isotopes
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Grace Johnson
Visit profile
Cards (5)
Atomic number (
Z
) - number of
protons
in the
nucleus
of an atom of that element.
Mass number (
A
) - sum of the
protons
and
neutrons
in the
nucleus
of that atom.
isotopes - atoms of the same
element
with different
masses.
Relative atomic mass (Ar) - the
weighted
mean of an atom of an element
compared
to 1/
12
of the
mass
of an atom of
carbon
12.
Relative isotopic mass - mass of an
individual
atom of a particular
isotope
relative to 1/
12
of the mass of an atom of
carbon
12.
