Question

what is the first 20 elements of the periodic table ​

Answer 1

Answer:

As you can see, Lithium, Beryllium, Sodium, Magnesium, Aluminum, Potassium, and Calcium are metals out of the first 20 elements. Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorus, Sulfur, Chlorine, and Argon, are non-metals within the first 20 elements.

Explanation:

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Answer 2

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The first 20 elements and their symbols are:

●Hydrogen (H)

●Helium (He)

●Lithium (Li)

●Beryllium (Be)

●Boron (B)

●Carbon (C)

●Nitrogen (N)

●Oxygen (O)

●Fluorine (F)

●Neon (Ne)

●Sodium (Na)

●Magnesium (Mg)

●Aluminum (Al)

●Silicon (Si)

●Phosphorus (P)

●Sulfur (S)

●Chlorine (Cl)

●Argon (Ar)

●Potassium (K)

●Calcium (Ca)

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