How to determine the number of valence electrons in an atom

- How to determine the number of valence electrons in an atom of a representative element
- How to determine the number of valence electrons in an atom of an element
- How to determine the number of valence electrons in an atom of a given element
- How to determine the number of valence electrons in an atom using the periodic table
- How to determine number of valence electrons
- How to find number of valence electrons from electron configuration
- How to find the number of valence electrons