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Atomic numbers of periodic table 1-20

write the atomic number of the element
Quiz by aIoevera
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Last updated: July 14, 2022
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First submittedJuly 14, 2022
Times taken30
Average score85.0%
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Hint
Answer
6
Carbon
19
Potassium
7
Nitrogen
3
Lithium
15
Phosphorus
8
Oxygen
9
Fluorine
10
Neon
20
Calcium
18
Argon
Hint
Answer
2
Helium
11
Sodium
12
Magnesium
4
Beryllium
17
Chlorine
13
Aluminium
5
Boron
14
Silicon
16
Sulfur
1
Hydrogen
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