One of the Noble gases..
Element/ Density (g/dm3)
Helium 0.1786
Neon0.9002
Argon 1.7818
Krypton 3.708
Xenon 5.851
Radon 9.97
The first two Helium and Neon are lighter than air; which leaves Argon, Krypton, Xenon and Radon.
krypton
Krypton is considered to be a non-toxic asphyxiant.[37]Krypton has a narcotic potency seven times greater than air, so breathing a gas containing 50% krypton and 50% air would cause narcosis similar to breathing air at four times atmospheric pressure. This would be comparable to Scuba diving at a depth of 30 m (100 ft) (see nitrogen narcosis) and potentially could affect anyone breathing it. Nevertheless, that mixture would contain only 10% oxygen and hypoxia would be a greater concern.
Gas is not dense, solids should be dense, liquids are dense, but not as much as solids.
More dense.
From most dense at the core to least dense proceeding outward.
if it sinks its more dense if it floats its less dense
In the Mediterranean Sea the cool dense water sinks under less dense water which is called density current.
This riddle is referring to Radon-222, a dense noble gas that is a byproduct of uranium-238 decay and is radioactive. Radon is colorless, odorless, and tasteless, making it hard to detect without proper testing. It can seep into homes through cracks and openings in the foundation, so it is important to regularly test for radon and take necessary precautions to prevent exposure.
dorsal fins dense, fibrous connective tissue, with no bones or cartilage
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It is not dense
Gas is not dense, solids should be dense, liquids are dense, but not as much as solids.
dense is an adjective. How about it is dense and so are you? the growth is dense. there is a dense growth of cells...blh blh blh hahahaha
no
Dense ice
More dense.
more dense
really dense