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a. Which alkali metal is used as a coolent in nuclear reactor ? b. What is the oxidation state of K in `KO_(2)` ? c. The `E^(Θ)` for `CI_(2)CI^(Θ)` is `+1.36`, for `I_(2)//I^(Θ)` is `+0.53`, for `Ag^(o+)//Ag` is `+0.79`, for `Na^(o+)//Na` is `-2.71` and for `Li^(o+)//Li` is`-3.04`. Arrange the following ionic species in decreasing order of reducing strength. `I^(Θ), Ag, CI^(Θ), Li, Na` d. Why is `KO_(2)` is paramagnetic ? |
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Answer» a. Sodium b. The superoxide species respresented as `O_(2)^(Θ)` . Since the compound is netural, therefore the oxidation state of potassium is +1. c. The order is `LigtNagtI^(Θ)gtAggtCI^(Θ)`. d. The superoxide `O_(2)^(Θ)` is paramagnetic, because of one unpaired electron in `pi^(*)2p` antibonding molecular orbital. |
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