Question

Why do all elements of the same group have same properties

Answer 1

Answer:

Because the number of valanced electrons are same in the outermost shell.....

Answer 2

$\huge\pink{Hello}$

$\large\blue{Answer:-}$

The properties of the elements depend on their structure and their valence electrons. All the elements of the same group have similar structure and same number of electrons in their outermost(valence) shell. So, they have similar or same properties.

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