Interhalogen compounds are molecules formed by the combination of two different halogens.
These compounds have the general formula \( AB_x \), where \( x = 1, 3, 5, 7 \).
The reaction of chlorine with dry slaked lime \( \text{Ca(OH)}_2 \) produces bleaching powder: \[ \text{Ca(OH)}_2 + Cl_2 \rightarrow \text{CaOCl}_2 + H_2O \]
Consider the following reaction:
\[ A + NaCl + H_2SO_4 \xrightarrow[\text{Little amount}]{} CrO_2Cl_2 + \text{Side products} \] \[ CrO_2Cl_2(\text{Vapour}) + NaOH \rightarrow B + NaCl + H_2O \] \[ B + H^+ \rightarrow C + H_2O \]
The number of terminal 'O' present in the compound 'C' is ________.