What is the trend in electronegativity of group 7?
The electronegativity is the tendency of an atom to attract electrons towards itself in a covalent bond.
The electronegativity of the halogens decreases down the group as the radius of each atom increases due to more shells.
This means there is less attraction between the positive nucleus and the outer electrons as you go down the group.
SA
Related Chemistry A Level answers
All answers ▸How does a catalyst effect the rate of reaction?
Proton NMR Made Easier
State what is meant by the term 'first ionisation energy' and explain why the first ionisation energy of barium is lower than that of calcium
What happens when some alkali is added to a buffer solution?