Assertion `(A) : ` The presence of `CO_(2)` in the air accelerates corrosion.
Reason `(R): CO_(2)` is a poisonous gas.

Options

A. Yellow
B. Red
C. Blue
D. connot be predicted

Answer

D

Explanation

In `CdI_(2)`, Pink colour is due to polarization of `I^(-)` by `Cd^(2+)` has pseudonoble gas configuration. In `CdCl_(2)`, extent of polarization of `Cl^(-)` by `Cd^(2+)` is reastively less, hence specific colour cannot be predicted.