8. Which of the following are predicted by the MO model to be unstable diatomic species? (H2+, H2, H22-, He2, He22+, He22-, Li2, Li22+) Explain why? (10 %)

10. For the reaction between nitric oxide and hydrogen, 2NO(g) + H2(g) →N2O(g) + H2O(g) may proceed via the following mechanism: 1. 2NO \(\xrightarrow{k_1}\) \(\xleftarrow{k_{-1}}\) N2O2 2. N2O2 + H2 \(\xrightarrow{k_2}\) N2O + H2OWrite the rate law for this reaction by using the steady-state approximation if step 2 is the rate-determining step in this mechanism. (10 %)

8. Which of the following are predicted by the MO model to be unstable diatomic species? (H₂⁺, H₂, H₂^2-, He₂, He₂²⁺, He₂^2-, Li₂, Li₂²⁺) Explain why? (10 %)

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