Iodine is an element in Group 7 of the Periodic Table.
Which of these is the formula for a molecule of iodine?
A
2I2\text{I}2I
B
I2\text{I}^2I2
C
I2\text{I2}I2
D
I2\text{I}_2I2
Markscheme
Group 7 (halogens) – chlorine, bromine and iodine Questions
33 exam-style questions on Edexcel IGCSE Chemistry Group 7 (halogens) – chlorine, bromine and iodine. Each one has a worked solution and a mark scheme showing where the marks go.