Question

in the halogen family belonging to the 17th group in the periodic table show similarity in the problem in their properties

Answer 1

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Here is your answer

Elements in the 17 group are

Flourine
Chlorine
Bromine
Iodine
Astatine
Tenessine

These all are Non Metals and theses elements are electonegative in nature.
These elements only gain electrons.
These all are one electron less to be more stable or to follow octet rule

Answer 2

- they are dangerous to human
-they are highly reactive so they are harmful
-they can only gain electron

hope this will help u