According to the Arrhenius equation, \( k = A e^{-\frac{E_a}{RT}} \), where \( k \) increases exponentially with temperature, showing a positive curvature as the temperature rises.




Which one of the following is the correct order of given isotopes?
I. \( T_2 > D_2 > P_2 \quad \text{(order of boiling point)} \)
II. \( T_2 > D_2 > P_2 \quad \text{(order of bond energy)} \)
III. \( T_2 = D_2 = P_2 \quad \text{(order of bond length)} \)
IV. \( T_2 < D_2 < P_2 \quad \text{(order of reactivity with } Cl_2 \text{)} \)
Match the species in Column I with their types in Column II.
