Period 3 element

The third period of the periodic table of the elements contains all the chemical elements that have exactly three electron shells in the atom. The innermost (first) electron shell is fully occupied and has two electrons. The second electron shell is also fully staffed and has eight electrons. The outermost (third) electron shell, also called valence shell, can accommodate between one and eight electrons, so there are also eight chemical elements in the third period.

Excerpt from the Periodic Table

Number of electrons in the electron shells

List

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8

  • Group of the periodic table
  • Period - 3 element
Group (periodic table) Sodium Magnesium Aluminium Chlorine Argon Period (periodic table) Period 1 element Period 2 element Period 4 element Period 6 element Period 7 element Period 8 element
180933
de