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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"
31	gallium	Ga	TNG: "Home Soil"
32	germanium	Ge	TNG: "Home Soil"
34	selenium	Se	TNG: "Final Mission"
35	bromine	Br
	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"
86	radon	Rn	DS9: "Emissary"
87	francium	Fr
	franconium	Fr	TNG: "Rascals"
	freedonia	Fr	TNG: "Rascals"
88	radium	Ra
	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"

Elements

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