Which of the following salts is a skin and respiratory irritant?
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Nitrogen dioxide
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Osmium tetroxide
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Palladium(II) chloride
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Palladium(II) nitrate
D
Correct answer
Explanation
Palladium(II) nitrate is a red-brown solid that is strongly oxidizing and may liberate noxious fumes upon reaction with reducing agents. It is a skin and respiratory irritant. It is normally stable at room temperature but decomposes at higher temperatures.