How to determine number of electrons an element has

- How do we determine the number of electrons an element has
- How to determine number of valence electrons an element has
- How do you determine the number of electrons an element has
- How do we determine the number of electrons an element has from a periodic table square
- How can you determine the number of electrons an element has
- How to determine the amount of electrons an element has
- How do you determine the number of valence electrons an element has
- How can you determine the number of valence electrons an element has
- B how do we determine the number of electrons an element has
- How do we determine the number of valence electrons an element has
- How do u determine the number of valence electrons an element has
- How can we determine the number of valence electrons an element has