Cr | Z = 24 | ◊ ◊ ◊ ◊ ◊ |
Chromium | |
From the Greek "chroma", meaning "color" | ||||
(AM) Atomic Mass | 51.996 amu | ♦ | Oxidation States | +2, +3, +6 |
(BP) Boiling Point | 2672  °C | ♦ | (MP) Melting Point | 1857 °C |
(ρ) Density | 7.14 g/cm3 | ♦ | Crystal Structure | Body Centered Cubic |
( χ ) Electronegativity | 1.6 | ♦ | (AR) Atomic Radius | 1.27  Å |
Physical State | Solid | ♦ | (C) Heat Capacity | 0.449 J/g °C |
Electronic-Config | [Ar]  3d5  4s1  | ♦ | (I1) First Ionization E | 652.82 kJ/mol |
(ΔHvap) Heat of Vaporization | 339.5 kJ/mol | ♦ | (ΔHfus) Heat of Fusion | 21 kJ/mol |
Year of Discovery | 1774 | ♦ | Location of Discovery | France |
(E°) Standard Potential | Cr3+⇔ Cr2+ (-0.420 V),   Cr3+⇔ Cr (-0.740 V) | |||
Stable isotopes |  50Cr,  52Cr,  53Cr,  54Cr | |||
Discovered/Synthesized by | Louis-Nicholas Vauquelin | |||
Natural Source | The mineral/ore chromite | |||
Common Uses | Stainless steel, kitchenware, nichrome heaters, car trim, paints, recording tape | |||
Other Info | Compounds include numerous pigments including chrome yellow | |||
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