Solved cryptogram
Argon is the third gas in our air by volume, ahead of carbon dioxide, and it reacts with nothing.
Chemistry Facts, sourced to Royal Society of Chemistry.
Or go to the puzzle’s own page first.
What it means
People are often surprised by this, because argon has no smell, no color and no effect on anything, so there is nothing to notice. It is close to one percent of the atmosphere, which is far more than carbon dioxide. Almost all of it came from the radioactive decay of potassium in rock over the lifetime of the planet, seeping upward and accumulating in the air.
The claim comes from Royal Society of Chemistry.
- SourceRoyal Society of Chemistry
- CollectionChemistry Facts
- Difficultyhard
- Length76 letters, 21 unique
Nearby in the collection
The facts either side of this one.
About as hard as this one
Scored closest to it by the model behind our guide to solving cryptograms.
- RSChard, 77 letters
- NASAhard, 76 letters
- RSChard, 71 letters
- University of Calgaryhard, 69 letters