Cr
Chromium
Chikamu 24 · 51.996 u
Chromium isiri nyore, lustery transition metal inokosha nekuda kwayo mirror kunyatsoita uye kupisa kuramba.
Maitiro ekushandisa
| Atomic radius: | 51.996 u |
| Kuomarara | 7.15 g/cm³ |
| Kutonhora Point | 2180.0 K |
| Kutonhora Point | 2944.0 K |
| Kuoneka | Steely-grey, lustrous, hard metallic |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 1.66 (Pauling) |
| 1st Ionization Energy | 652.9 kJ/mol |
| Electronegativity: | 65.2 kJ/mol |
| Oxygen | +1, +2, +3, +4, +5, +6 |
Atomic Properties
| Kuisa Kugadzirisa | [Ar] 3d5 4s1 |
| Atomic radius: | 128.0 pm |
| Covalent Radius | 139.0 pm |
| Van der Waals radius | 189.0 pm |
Discovery
| Yakawanikwa ne | Louis Nicolas Vauquelin |
| Kuonekwa kwegore | 1797 |
| _Panzvimbo: | Paris, France |
| Akapihwa zita mushure me | Greek 'chroma' zvinoreva kuti color, nekuda kwezvimwe zvakawanda colorful compounds |
Nezve Chromium
Chromium isimbi-grey, lustery, zvakaoma simbi iyo inotora a high polish.It anokosha zvikuru nekuda kwayo kuomarara kutarnishing.It ane asingazivikanwe electronic configuration neimwe chete 4s electron nekuda kwechivimbo chegumi-yakasviba 3d shell.
Mashandisiro & Maapplication
Stainless simbi, chrome plating, pigments, bvudzi tanning, uye catalysts.
Nhoroondo yemitambo
Chromium ine anononoka electron configuration - 'inotora' electron kubva ku4s kuti ipe hafu-yakasviba 3d orbital.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 50 | 0.04345% | - | _Ndiani |
| 52 | 0.83789% | - | _Ndiani |
| 53 | 0.09501% | - | _Ndiani |
| 54 | 0.02365% | - | _Ndiani |
Kuisa Kugadzirisa
[Ar] 3d5 4s1