Elements by atomic number

This is a list of elements by atomic number. Elements without a known atomic number, or no relationship with an element that has a known atomic number, are not listed here.

No. Element Name Symbol Source
01 hydrogen H TOS: "The Alternative Factor"
  antideuterium D TNG: "Night Terrors"
  tritium T DS9: "When It Rains..."
  ultritium   TNG: "Manhunt"
02 helium He TNG: "Masks"
03 lithium Li TOS: "Where No Man Has Gone Before"
  dilithium Dt TOS: "Journey to Babel"
  trilithium   Star Trek Generations
  paralithium   VOY: "The Chute"
  silithium   DS9: "Destiny"
04 beryllium Be TOS: "I, Mudd"
  beium Be TNG: "Rascals"
05 boron B DS9: "Blaze of Glory"
06 carbon C TOS: "The Omega Glory"
07 nitrogen N TOS: "The Cage"
08 oxygen O TOS: "The Cage"
09 fluorine F TNG: "Interface"
10 neon Ne TOS: "The Galileo Seven"
11 sodium Na TNG: "Home Soil"
12 magnesium Mg TNG: "The Best of Both Worlds"
  magnumium PI Mg TNG: "Rascals"
13 aluminum Al Star Trek IV: The Voyage Home
  borite   Star Trek IV: The Voyage Home
  smutkoian Al TNG: "Rascals"
14 silicon Si TOS: "The Devil in the Dark"
15 phosphorus P TOS: "The Omega Glory"
16 sulfur S TOS: "Arena"
17 chlorine Cl TOS: "The Man Trap"
18 argon Ar TNG: "The Chase"
  dentium Ar TNG: "Rascals"
19 potassium K TOS: "The Omega Glory"
  sodium K TNG: "Rascals"
20 calcium Ca TOS: "The Omega Glory"
  californium Ca TNG: "Rascals"
  hobbes Ca TNG: "Rascals"
  paramount Ca TNG: "Rascals"
22 titanium Ti TOS: "I, Mudd"
24 chromium Cr TNG: "The Best of Both Worlds"
  curly Cr TNG: "Rascals"
25 manganese Mn TNG: "The Best of Both Worlds"
26 iron Fe TOS: "The Squire of Gothos"
27 cobalt Co TNG: "Conundrum"
  dicobalt   ENT: "Horizon"
  tricobalt   TOS: "A Taste of Armageddon"
  cavorite CO TNG: "Rascals"
28 nickel Ni TOS: "Metamorphosis"
29 copper Cu TOS: "The Man Trap"
30 zinc Zn TOS: "The City on the Edge of Forever"
32 germanium Ge TNG: "Home Soil"
34 selenium Se TNG: "Final Mission"
35 bromine Br SNW: "Children of the Comet"
  bermanium Br TNG: "Rascals"
  brownfieldium Br TNG: "Rascals"
  yacobian Br TNG: "Rascals"
36 krypton Kr TOS: "The Galileo Seven"
  kryptonite Kr TNG: "Rascals"
37 rubidium Rb VOY: "Think Tank"
  rhubarbium Rb TNG: "Rascals"
42 molybdenum Mo TNG: "The Most Toys"
  stoogeium Mo TNG: "Rascals"
45 rhodium Rh DS9: "For the Uniform"
47 silver Ag TOS: "The Naked Time"
48 cadmium Cd TNG: "Home Soil"
  meeseian Cd TNG: "Rascals"
50 tin Sn VOY: "Muse"
  exitstageleft Sn TNG: "Rascals"
  snarkium Sn TNG: "Rascals"
54 xenon Xe TNG: "Legacy"
  theta-xenon   VOY: "Flashback"
55 cesium Cs  
  cosmoium Cs TNG: "Rascals"
  hydrogen Cs TNG: "Rascals"
56 barium Ba VOY: "Tuvix"
  babaloo Ba TNG: "Rascals"
57 lanthanum La  
  stoogeian La TNG: "Rascals"
58 cerium Ce TOS: "The Devil in the Dark"
60 neodymium Nd DS9: "In the Cards"
62 samarium Sm TNG: "Manhunt"
63 europium Eu TNG: "Manhunt"
64 gadolinium Gd TNG: "Manhunt"
65 terbium Tb TNG: "Manhunt"
66 dysprosium Dy TNG: "Manhunt"
  disneyium Dy TNG: "Rascals"
67 holmium Ho TNG: "Manhunt"
68 erbium Er TNG: "Manhunt"
69 thulium Tm  
  purseronite Tm TNG: "Rascals"
70 ytterbium Yb DS9: "Our Man Bashir"
74 tungsten W VOY: "Investigations"
76 osmium Os TOS: "That Which Survives"
77 iridium Ir TOS: "Bread and Circuses"
78 platinum Pt TOS: "The City on the Edge of Forever"
  latinum   DS9: "Emissary"
79 gold Au TOS: "The Devil in the Dark"
80 mercury Hg TOS: "The Galileo Seven"
  redskinium Hg TNG: "Rascals"
81 thallium Tl TNG: "Who Watches The Watchers"
82 lead Pb TOS: "Where No Man Has Gone Before"
83 bismuth Bi  
  thomsonian Bi TNG: "Rascals"
84 polonium Po  
  poi Po TNG: "Rascals"
85 astatine At DS9: "Paradise"
87 francium Fr  
  franconium Fr TNG: "Rascals"
  freedonia Fr TNG: "Rascals"
  johnsonium Ra TNG: "Rascals"
89 actinium Ac  
  accurentum Ac TNG: "Rascals"
90 thorium Th DS9: "The Siege"
92 uranium U TOS: "The Devil in the Dark"
94 plutonium Pu TNG: "Night Terrors"
98 californium Cf TNG: "Rascals"
99 einsteinium Es  
  estonianium Es TNG: "Rascals"
101 mendelevium Md  
  hawkeye Md TNG: "Rascals"
178 isolynium DIS: "Species Ten-C"

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