Comparing E938 - Argon vs E941 - Nitrogen
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Popular questions
What element has 18 electrons?
Argon (E938); a neutral argon atom has 18 electrons because its atomic number is 18.
What element has 18 neutrons?
The argon isotope argon‑36 (36Ar) has 18 neutrons (36 − 18 = 18).
What element has 18 protons?
Argon—its atomic number is 18, meaning it has 18 protons.
What element has 17 protons and 18 neutrons?
Chlorine‑35; that nucleus (17 protons, 18 neutrons) belongs to chlorine, not argon.
Which element has 18 electrons?
Argon (E938); a neutral argon atom carries 18 electrons.
How many valence electrons does nitrogen have?
Five; a nitrogen atom has 5 valence electrons (2s2 2p3).
What is nitrogen fixation?
Nitrogen fixation is the conversion of atmospheric N2 (E941) into biologically available forms like ammonia by microbes, lightning, or the industrial Haber–Bosch process.
What is nitrogen used for?
In foods, E941 is used as an inert propellant and packaging gas to displace oxygen, prevent oxidation, and extend shelf life. Liquid nitrogen is also used for rapid freezing and to create fine bubbles/creamy textures in beverages (e.g., nitro coffee or beer).
Is nitrogen a greenhouse gas?
No—diatomic nitrogen (N2, E941) is not a greenhouse gas because it does not absorb infrared radiation; nitrous oxide (N2O, E942) is.
What is the nitrogen cycle?
The nitrogen cycle is the movement of nitrogen among the atmosphere, soils, water, and living organisms. It includes fixation of N2 (E941) into reactive forms, biological uptake, and return to N2 via processes like denitrification.