Cr

Kromị

Elementị 24 · 51.996 u

Nhazi metal d-block Oge 4 Ụlọọrụ 6 Òtù na RT Wikipedia →

Chromium bụ a hard, lustrous transition metal valued maka ya mirror ngwụcha na corrosion resistance.

Nkarachọ

Atomic mass51.996 u
Mgbatị7.15 g/cm³
Mmalite2180.0 K
Nhazi2944.0 K
NhaziSteely-grey, lushious, hard metallic
Oge n'ime ụlọÒtù

Ihenhọrọ ndị ahụ

Elektrọn1.66 (Pauling)
Nhazi652.9 kJ/mol
Elektrọn65.2 kJ/mol
Oxygenation state+1, +2, +3, +4, +5, +6

Ihenhọrọ nke atom

Nhazi[Ar] 3d5 4s1
Atomic Radius128.0 pm
Covalent Radius139.0 pm
Van der Waals Radius189.0 pm

Ndesịta ozi ndị ahụ

E chọpụtara site naLouis Nicolas Vauquelin
Ụbọchị emeredịkachọrọ1797
EbeParis, France
Aha mgbe ahụGreek 'chroma' pụtara ụcha, n'ihi na ọ nwere ọtụtụ ụcha ndị ọzọ

Báà Kromị

Chromium bụ steely-grey, lustrous, hard metal nke na-ewere polish elu. Ọ bụ ihe dị mma maka nrụgide ya na-egbochi. Ọ nwere nhazi eletriki dị iche iche na naanị otu 4s eletriki n'ihi na nrụgide nke 3d shell nke a na-adọta.

Usoroiheomume

Stainless steel, chrome plating, pigments, leather tanning, na catalysts.

Eziokwu dị ụtọ

Chromium nwere nhazi elekronụọ̀nụ̀ a na-agaghị ekwe omume -- ọ na-ewepụ elekronụọ̀nụ̀ site na 4s ka ọ na-enye 3d orbital nke a na-akpụchaghị.

Isotopes

Nkebi Afọ́ọ̀ltụ̀ Half-Life Òtù
50 0.04345% - Ee
52 0.83789% - Ee
53 0.09501% - Ee
54 0.02365% - Ee

Nhazi

[Ar] 3d5 4s1

Tụnyere

Banye na ndị ọzọ

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