Reactivity of group 7

Question 1

What happens when halogens react?

Answer 1

= remove an electron from another species
= halogen is being reduced
= the species is being oxidised
=

Question 2

What are halogens?

Answer 2

= oxidising agents
= more reactive halogens are stronger oxidising agents than less reactive halogens
= Flourine is the powerful oxidising agent
= reactivity decreases

Question 3

Why does the reactivity decrease?

Answer 3

= sheilding increases
= size of atom increases
= protons increases
= harder for electrons to exist/ to gain electrons