Question

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

Answer 1

The halogens are all elements that are found in group 17 of the periodic table. The halogens include fluorine,chlorine, bromine, iodine, and astatine. All of these elements are considered to be reactive nonmetals. Atoms of an element react with other atoms based on the number of electrons found in their outer orbit.

Answer 2

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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