Question

Will different elements with same valence electrons have same Chemical properties? Why?

Answer 1

Valency of an element determines its chemical reactivity. Therefore, for all elements belonging to a particular group in the periodic table, the number of electrons in the outermost shell, that is the valence electrons will be the same. Hence, all the elem in that group will show the same chemical reactivity. They will react with different elements in the same way and the molecular formula of their compounds will be similar. Hence, they have the same chemical properties.