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| 1. |
Which of the following gases exist more abundantly in nature than the others |
| Answer» Solution :`{:("Gas",,"(Abundance in air by volume (ppm))"),("Helium",,"5.2"),("Neon",,"18.2"),("Argon",,"93.4"),("Krypton",,"1.1"),("XENONE",,"0.09"):}` | |