give me the first 20 elements by sequence
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give me the first 20 elements by sequence
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H–hydrogen
He–Helium
Li–lithium
Be–Berilium
B–Boron
C–Carbon
N–Nitrogen
O–Oxygen
F–fluorine
Ne–Neon
Na–Sodium
Mg–Magnesium
Answer:
1 Hydrogen -H
2 Helium -He
3 Lithium- Li
4 Beryllium- Be
5 Boron- B
6 Carbon - C
7 Nitrogen - N
8 Oxygen - O
9 Fluorine - F
10 Neon - Ne
11 Sodium - Na
12 Magnesium - Mg
13 Aluminium - Al
14 Silicon- Si
15 Phosphorus - P
16 Sulfur - S
17 Chlorine - Cl
18 Argon - Ar
19 Potassium - K
20 Calcium - Ca
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