ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gas
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liquid
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solid
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Detailed explanation-1: -N2 forms about 78% of Earth’s atmosphere, making it the most abundant uncombined element.
Detailed explanation-2: -Nitrogen is in the soil under our feet, in the water we drink, and in the air we breathe. In fact, nitrogen is the most abundant element in Earth’s atmosphere: approximately 78% of the atmosphere is nitrogen! Nitrogen is important to all living things, including us.
Detailed explanation-3: -Due to strong triple bond in N2(N≡N) or high activation energy, nitrogen is unreactive and thus is most abundant gas in the Earth’s atmosphere.
Detailed explanation-4: -Nitrogen is the seventh most abundant element in the universe and is a major constituent of the atmosphere on Titan, the largest of Saturn’s 62 moons. (Anomalies in the composition of Titan’s atmosphere have led some to suggest that Titan might even harbor life forms).