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Nitrogen's Inertness and Nitrogen Fixation

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Molecular nitrogen is largely unreactive because its atoms share a strong triple bond, so converting it to reactive compounds — nitrogen fixation — needs biological or industrial processes.

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Nitrogen-fixing bacteria in legume root nodules convert atmospheric N2 into ammonia plants can use.

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Nitrogen's inertness is about bond strength, not a lack of oxidation states — nitrogen forms compounds from 3− to 5+.

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