Solved cryptogram
Chromium takes its name from color, because its compounds come in reds, greens and yellows.
Chemistry Facts, sourced to Royal Society of Chemistry.
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What it means
A trace of chromium is what makes a ruby red and an emerald green, in each case sitting inside a mineral that would otherwise be colorless. The element is also what puts the stainless in stainless steel: at around a tenth of the alloy by weight it forms a self repairing oxide film that keeps oxygen away from the iron underneath.
The claim comes from Royal Society of Chemistry.
- SourceRoyal Society of Chemistry
- CollectionChemistry Facts
- Difficultyhard
- Length74 letters, 21 unique
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