The sense development in English is from cry to lamentation to grief. Meaning charge, oversight, protection is attested c.1400, the sense in care of in addressing. To take care of take in hand, do is from 1580s.
Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.rivalent chromium (Cr(III)) ion is possibly required in trace amounts for sugar and lipid metabolism, although the issue remains in debate. In larger amounts and in different forms, chromium can be toxic and carcinogenic.
The Mineral chromite. Chromite is a commercially valuable mineral as it is the principle ore of the element chromium. However, due to mining restrictions and the fact that Chromite is not commonly found in crystallized form, it is not well-represented in mineral collections.here are not many occurrences of collectible Chromite specimens, as this mineral mostly occurs in microcrystalline form in commercially exploited deposits.