First 20 elements of the Periodic table in 30 seconds

Try and solve all the first 20 elements in 30 seconds!

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Last updated: May 3, 2015

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First submitted	May 2, 2015
Times taken	2,213
Average score	50.0%
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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	Sulphur
17	Chlorine
18	Argon
19	Potassium
20	Calcium