How to find of electrons on periodic table

- How to find number of electrons on periodic table
- How to find of valence electrons on periodic table
- How to find number of valence electrons on periodic table
- How to find amount of valence electrons on periodic table
- How to find number of electrons using periodic table
- How to find number of electrons in an element periodic table
- How to find amount of electrons on periodic table
- How to find electrons on periodic table with mass number
- How to find total number of electrons on periodic table
- How to find out number of electrons on periodic table