ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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N
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N2
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NH3
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NO3
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Detailed explanation-1: –The chemical formula for nitrogen gas is ‘N2’.-In the case of N2 gas, the two nitrogen atoms are bonded by a triple covalent bond (3 electrons are contributed by each atom to form triple bonds).-Nitrogen has two stable isotopes: 14N and 15N.
Detailed explanation-2: -In the atmosphere, nitrogen exists as a gas (N2), but in the soils it exists as nitrogen oxide, NO, and nitrogen dioxide, NO2, and when used as a fertilizer, can be found in other forms, such as ammonia, NH3, which can be processed even further into a different fertilizer, ammonium nitrate, or NH4NO3.
Detailed explanation-3: -Gases. The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air. Oxygen (O2) is the second most abundant gas at about 21%. The inert gas argon (Ar) is the third most abundant gas at 0.93%.