First 20 elements

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40 Terms

1
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H

Hydrogen

2
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He

Helium

3
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Li

Lithium

4
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Be

Beryllium

5
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B

Boron

6
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C

Carbon

7
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N

Nitorgen

8
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O

Oxygen

9
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F

Fluorine

10
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Ne

Neon

11
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Na

Sodium

12
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Mg

Magnesium

13
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Al

Aluminium

14
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Si

Silicon

15
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P

Phosphorus

16
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S

Sulfur

17
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Cl

Chlorine

18
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Ar

Argon

19
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K

Potassium

20
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Ca

Calcium

21
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1

Atomic number of Hydrogen

22
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2

Atomic number of Helium

23
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3

Atomic number of Lithium

24
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4

Atomic number of Beryllium

25
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5

Atomic number of Boron

26
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6

Atomic number of Carbon

27
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7

Atomic number of Nitrogen

28
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8

Atomic number of Oxygen

29
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9

Atomic number of Fluorine

30
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10

Atomic number of Neon

31
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11

Atomic number of Sodium

32
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12

Atomic number of Magnesium

33
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13

Atomic number of Aluminium

34
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14

Atomic number of Silicon

35
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15

Atomic number of Phosphorus

36
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16

Atomic number of Sulfur

37
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17

Atomic number of Chlorine

38
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18

Atomic number of Argon

39
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19

Atomic number of Potassium

40
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20

Atomic number of Calcium