Redox Properties Of Halogens And Halide Ions

Question 1

All halogens are oxidising agents because

Answer 1

They accept electrons to form halide ions

2Na + Cl2 ➡️ 2NaCl
0. 0. +1. -1

Cl - oxidising agent

Question 2

Oxidising agent trend for halide ions

Answer 2

Nuclear charge ⬆️
Shielding ⬆️
Core charge 🟰
Atomic radius ⬆️
Nuclear attraction ⬇️

Question 3

Halide ions are reducing agents because

Answer 3

They are electron donors

Fe3+ + I- ➡️ Fe2+ + 1/2I2

Fe donates an electron

Question 4

Reducing agent trend in halide ions

Answer 4

Nuclear charge ⬆️
Shielding ⬆️
Core charge stays the same
Atomic radius ⬆️
Nuclear attraction ⬇️
Electrons are easier to lose further down the group