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What Are the First 20 Elements?

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Calcium, a metal, is the 20th chemical element.

Calcium, a metal, is the 20th chemical element.

Curnen, Public Domain

Question: What Are the First 20 Elements?

One common chemistry assignment is to name or even memorize the first 20 elements and their symbols. The elements are ordered in the periodic table according to increasing atomic number. This is also the number of protons in each atom.

Answer: These are the first 20 elements, listed in order:

1 - H - Hydrogen
2 - He - Helium
3 - Li - Lithium
4 - Be - Beryllium
5 - B - Boron
6 - C - Carbon
7 - N - Nitrogen
8 - O - Oxygen
9 - F - Fluorine
10 - Ne - Neon
11 - Na - Sodium
12 - Mg - Magnesium
13 - Al - Aluminum
14 - Si - Silicon
15 - P - Phosphorus
16 - S - Sulfur
17 - Cl - Chlorine
18 - Ar - Argon
19 - K - Potassium
20 - Ca - Calcium

Learn More

Full Element List
How To Memorize the First 20 Elements
20 Element Symbol Quiz
Element Name and Symbol Matching Quiz

 

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