At 1990 K and 1 atm pressure, there are equal number of $\mathrm{Cl}_2$ molecules and Cl atoms in the reaction mixture. The value $\mathrm{K}_{\mathrm{P}}$ for the reaction $\mathrm{Cl}_{2(g)} \rightleftharpoons 2 \mathrm{Cl}_{(g)}$ under the above conditions is $\mathrm{x} \times 10^{-1}$. The value of x is $\_\_\_\_$ . (Rounded of to the nearest integer)