Question

Predict which of the formulae are not correct for the given compounds: Correct the wrong ones.
Cadmium iodide : ${\mathrm{CdI}}_3$

Answer 1

Cadmium iodide:

1. Cadmium iodide is a white-colored liquid.
2. It is hygroscopic and notable for its crystalline structure.

Chemical formula:

1. The chemical formula that is given as ${\mathrm{CdI}}_3$ for Cadmium iodide is wrong.
2. There is no compound with the chemical formula ${\mathrm{CdI}}_3$.
3. Cadmium iodide has a chemical formula ${\mathrm{CdI}}_2$.As the valency of cadmium is 2 and not 3 and the valency of iodine is 1.