Primordial Elements

Name the chemical elements that have existed since the formation of Earth (i.e. not those that come into existence due to radioactive decay or are synthesized by humans).

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Last updated: October 14, 2018

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First submitted	October 14, 2018
Times taken	5
Average score	55.4%
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Number	Element
1	Hydrogen
2	Helium
3	Lithium
4	Beryllium
5	Boron
6	Carbon
7	Nitrogen
8	Oxygen
9	Fluorine
10	Neon
11	Sodium
12	Magnesium
13	Aluminium
14	Silicon
15	Phosphorus
16	Sulfur
17	Chlorine
18	Argon
19	Potassium
20	Calcium
21	Scandium

Number	Element
22	Titanium
23	Vanadium
24	Chromium
25	Manganese
26	Iron
27	Cobalt
28	Nickel
29	Copper
30	Zinc
31	Gallium
32	Germanium
33	Arsenic
34	Selenium
35	Bromine
36	Krypton
37	Rubidium
38	Strontium
39	Yttrium
40	Zirconium
41	Niobium
42	Molybdenum

Number	Element
44	Ruthenium
45	Rhodium
46	Palladium
47	Silver
48	Cadmium
49	Indium
50	Tin
51	Antimony
52	Tellurium
53	Iodine
54	Xenon
55	Cesium
56	Barium
57	Lanthanum
58	Cerium
59	Praseodymium
60	Neodymium
62	Samarium
63	Europium
64	Gadolinium
65	Terbium

Number	Element
66	Dysprosium
67	Holmium
68	Erbium
69	Thulium
70	Ytterbium
71	Lutetium
72	Hafnium
73	Tantalum
74	Tungsten
75	Rhenium
76	Osmium
77	Iridium
78	Platinum
79	Gold
80	Mercury
81	Thallium
82	Lead
83	Bismuth
90	Thorium
92	Uranium