How to know the number of electrons in an element

- How do i know the number of electrons in an element
- How to find the number of electrons in an element
- How to know the amount of electrons in an element
- How to get the number of electrons in an element
- How to find the number of electrons in an element periodic table
- How to figure out the number of electrons in an element
- How to find the number of valence electrons in an element
- How to find the number of protons and electrons in an element
- How do you know the number of electrons in an element
- How to tell the number of electrons in an element
- How to calculate the number of electrons in an element