Question

Do elements in the same family have the
same physical and chemical properties ?Why?
same reaction?why?

Answer 1

@matt101

Answer 2

Because they have a very similar "outer surface charge", the same configuration of valence electrons. But as you move down a group, the average radius increases and valence é feel less attraction towards the nucleus. This larger and more polarizable electron "cloud" results in a change in intermolecular forces that directly influences the physical properties (e.g. melting point). Similarly, because of the decrease in effective nuclear charge, valence electrons require less energy to be ionized - ionization energy is a measure of chemical reactivity.

Answer 3

Ok, but you did not mention if they have the same physical or chemical properties?

Do they have similar reaction as well?

Answer 4

yes, similar reactivity, chemical and physical properties

Answer 5

@aaronq thank you my friend. :)