Question

why group 17 elements are highly reactive help please ​

Answer 1

Answer:

B'coz they have 7 electrons in their outermost shell.. They have to gain only one electron to attain their octet.. Moreover, reactivity of non metals increases on moving from left to right in a period.. so being second last in each period.. halogens {group 17 elements} are highly reactive..

hope it helps ᕙ( • ‿ • )ᕗ

Answer 2

Answer:

Group 17: General Properties of Halogens. The halogens are located on the left of the noble gases on the periodic table. ... Because the halogen elements have seven valence electrons, they only require one additional electron to form a full octet. This characteristic makes them more reactive than other non-metal groups