Cr

Chromium

Qaybta 24 · 51.996 u

Midab: d-block Waqtiga 4 _Dhaqdhaqaaq 6 Cidhiidhi at RT Wikipedia →

Chromium waa adag, lustrous metal isbeddelka qiimaha u ah dhamaadka mirror iyo iska caabinta daxalka.

Eeg astaamaha

Atomic mass51.996 u
Cidhiidhi7.15 g/cm³
Natiijooyinka2180.0 K
Natiijooyinka2944.0 K
MuuqaalkaSteely-cagaaran, shidan, adag oo bir ah
Xaaladda heerkulka qolkaCidhiidhi

Eegista

Electronegativity1.66 (Pauling)
1st Ionization652.9 kJ/mol
Istaraatiijiyad65.2 kJ/mol
Nidaamka+1, +2, +3, +4, +5, +6

_Cusub:

Nidaamka[Ar] 3d5 4s1
Awooda128.0 pm
Xaraf139.0 pm
Van der Waals189.0 pm

Dib u eegista

La OgaadayLouis Nicolas Vauquelin
Sannadka la helay1797
_MeelParis, Faransiiska
MagacaabistaGiriigga 'chroma' macnaheedu waa midab, sababtoo ah isku-dhafka badan ee midabka leh

_Warbixinta Chromium

Chromium waa steely-cagaaran, lustrous, bir adag oo qaadata polish sare. Waa mid la yaab leh in ay ka hortagto tarnishing. Waxay leedahay qaabeynta elektaroonigga ah oo aan caadi ahayn oo leh hal 4s elektron sabab u ah xasilloonida a 3d shell badh buuxa.

Barnaamijyada

Steel aan lahayn, chrome plating, pigments, maqaarka tanning, iyo catalysts.

Xaqiiqo xiiso leh

Chromium waxaa ku jira qaabeynta electron aan caadi ahayn - waa 'dhaqato' electron ka 4s si ay u bixiyaan 3d orbital badh buuxa.

Isotoobyo

Tirada Tirada Half-Life Xasiloon
50 0.04345% - Haa
52 0.83789% - Haa
53 0.09501% - Haa
54 0.02365% - Haa

Nidaamka

[Ar] 3d5 4s1

La barbardhigo

La barbardhigo qaybaha kale

Fur Qalabka La Xiriirinta
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