Question

Both sodium and fluorine has valency of 1 but they different chemical properties why​

Answer 1

Answer:

sodium and fluorine has a valency 1 but the number of valence electron is different and the come in different groups

Explanation:

Answer 2

The atomic number of sodium is 11 and the atomic number of flourine is 9

As the electronic configuration of sodium (2, 8 ,1) and flourine(2, 7).flourine is a non metal which gain electron to complete it's octade as it takes one electron to complete it's octade hence the valency of flourine is 1.while sodium is a metal which loose electron to complete it's octade as it looses one electron and becomes stable by completing it's octage and it's valency is also 1.