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Classify the following redox reaction: ...

Classify the following redox reaction:
a. `N_(2)(g)+O_(2)(g)rarr 2NO(g)`

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a. Combination redox reaction: `N_(2) and O_(2)` combines together to give `NO`( nitric oxide).
b. Decomposition redox(nitric oxide): `Pb(NO_(3))_(2)`( lead nitrate) breaks into three components.
c. Displacement redox reaction: Hydrogen of `H_(2)O` is displaced by `H^(ө)`( hydride ion)into `H_(2)` gas.
d. Disproporationation redox reaction: `NO_(2)(+4 "oxidation state")` disproportionates into `NO_(2)^(ө)(+3"oxidation state")` and `NO_(2)^(ө)(+5"oxidation state")`.
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