The relationship between the valence electrons and position is: the number of valence electrons determines the position
What is valence electron?
This is the number of electrons in the outermost shell of an atom.
NOTE: The outermost shell is called valence shell
Position in Periodic table
This is where an element is located in the periodic table
Relationship between valence electrons and position
The position of an element in the periodic table is determined by the number of valence electrons.
For example
Sodium, Na (atomic number of 11) has the following electronic configuration
- 1st shell = 2 electrons
- 2nd shell = 8 electrons
- 3rd (valence) shell = 1 electron
Since the valence electron is 1, thus, sodium is located in group 1 of the periodic table.
Thus, we can see that the position of an element in the periodic table is related to the valence electron(s) in the atomic shell of the element.
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