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 ▸Arrange the following elements in order of increasing ionization energy. Give an explanation. a) K, Cs, Na b) F, N, Be
Given is a following reaction at equilibrium: N2(g) + 3H2(g) ⇄ 2NH3(g), ΔH < 0. What will be the effect of changing the following conditions on the system? 1. Increasing pressure. 2. Decreasing temperature. 3. Adding a catalyst. 4. Adding HCl(g).
Describe a test that could be used to distinguish between potassium sulfate (K2SO4) and potassium nitrate (KNO3)
What is meant by the term salt? And how would you confirm if the salt had chloride ions in?