20 Examples of Valence Electrons

Valence electrons are the electrons found in the outermost energy level (shell) of an atom. They determine an element’s chemical properties and play a critical role in chemical reactions and bonding.

Examples of Valence Electrons

Here are 20 examples of valence electrons:

1. Hydrogen (H)

Hydrogen, with its atomic number of 1, has one valence electron in its sole energy level.

2. Helium (He)

Helium, atomic number 2, contains two electrons but has a completely filled first energy level, resulting in zero valence electrons.

3. Lithium (Li)

Lithium, with an atomic number of 3, possesses one valence electron in its second energy level.

4. Beryllium (Be)

Beryllium, atomic number 4, has two valence electrons in its second energy level.

5. Boron (B)

Boron, atomic number 5, contains three valence electrons in its second energy level.

6. Carbon (C)

Carbon, with an atomic number of 6, boasts four valence electrons located in its second energy level.

7. Nitrogen (N)

Nitrogen, atomic number 7, has five valence electrons in its second energy level.

8. Oxygen (O)

Oxygen, with an atomic number of 8, possesses six valence electrons in its second energy level.

9. Fluorine (F)

Fluorine, atomic number 9, contains seven valence electrons in its second energy level.

10. Neon (Ne)

Neon, atomic number 10, has eight valence electrons, resulting in a complete and stable second energy level.

11. Sodium (Na)

Sodium, with an atomic number of 11, possesses one valence electron in its third energy level.

12. Magnesium (Mg)

Magnesium, atomic number 12, has two valence electrons in its third energy level.

13. Aluminum (Al)

Aluminum, atomic number 13, contains three valence electrons in its third energy level.

14. Silicon (Si)

Silicon, with an atomic number of 14, boasts four valence electrons located in its third energy level.

15. Phosphorus (P)

Phosphorus, atomic number 15, has five valence electrons in its third energy level.

16. Sulfur (S)

Sulfur, with an atomic number of 16, possesses six valence electrons in its third energy level.

17. Chlorine (Cl)

Chlorine, atomic number 17, contains seven valence electrons in its third energy level.

18. Potassium (K)

Potassium, atomic number 19, has one valence electron in its fourth energy level.

19. Calcium (Ca)

Calcium, with an atomic number of 20, has two valence electrons in its fourth energy level.

20. Iron (Fe)

Iron, atomic number 26, contains multiple energy levels, but its valence electrons are primarily located in the fourth energy level.