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.
Elemental chromium is seldom found naturally in the environment. The oxidized states of chromium III and chromium VI are the most important forms of the chemical. Chromium III is an essential trace element in humans but chronic exposure may be harmful.Chromium VI (hexavalent chromium) is the oxidized state of principal concern in occupational safety and health and the environment because of its extreme toxicity and designation as a human carcinogen.lemental chromium is seldom found naturally in the environment. The oxidized states of chromium III and chromium VI are the most important forms of the chemical. Chromium III is an essential trace element in humans but chronic exposure may be harmful.