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15 Cards in this Set

  • Front
  • Back
Atom
smallest particle in an element
democritus
named an atom
John Dalton
discovered the atom
Jay Jay Thompson
discovered electron
malible
can take into thin seets
valance electrons
electrons that are in the outermost shell of the bohr modle
anion
charged partice
Halos genes
halogenes
Mendeleev
first to come across the pereodic table
periodic table has
18 groups
orbitals
regions in an atom where electrons are found
pereodic law
properties of elements tend to change a regular pattern
atomic number
number of protons in the nuclues
isotypes
atoms having the same number of protons but different numbers of neutrons
transition metals
metallic elements located in groups 3-12