Consider the following reaction: 2HI(g) H₂(g) + I2 (g) If 1.91 moles of HI(g), 0.360 moles of H₂, and 0.281 moles of I2 are at equilibrium in a 18.8 L container at 918 K, the value of the equilibrium constant, Kc, is

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A: Resonance structures of Radical is given below,