Asked by: Emily Denti
asked in category: General Last Updated: 4th February, 2020

What are the 18 elements?

Today, I will present the first eighteen elements which are Hydrogen,Helium, Lithium,Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, and Argon.

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Also question is, what is the 18th element of the periodic table?

Argon

One may also ask, why are the first 18 elements special? (1) The electrons fit nicely into three orbitals. Remember that the electrons spin around the nucleus in regions called orbitals. (3) It is a lot easier to remember facts about 18 elements as opposed to over 100 elements.

In this regard, how many elements are there in the 18th group?

seven

What are the 20 elements?

These are the first 20 elements, listed in order:

  • H - Hydrogen.
  • He - Helium.
  • Li - Lithium.
  • Be - Beryllium.
  • B - Boron.
  • C - Carbon.
  • N - Nitrogen.
  • O - Oxygen.

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