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Name | Mastery | Learn | Test | Matching | Spaced |
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H
1st Element
He
2nd Element
Li
3rd Element
Be
4th Element
B
5th Element
C
6th Element
N
7th Element
O
8th Element
F
9th Element
Ne
10th Element
Na
11th Element
Mg
12th Element
Al
13th Element
Si
14th Element
P
15th Element
S
16th Element
Cl
17th Element
Ar
18th Element
K
19th Element
Ca
20th Element