26 Fe 55.845 u

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주기
4
8
블록
d-블록
상 (표준 상태)
Solid

철은 지구에서 가장 많이 쓰이는 금속이자 강철의 주성분이다. 헤모글로빈의 일부로서 혈액의 산소 운반에 필수적이다.

외관: 회색빛을 띤 광택 있는 금속

철 개요

Iron is the most widely used of all metals and the principal ingredient of steel. This transition metal has atomic number 26 and an atomic mass of 55.845, a density of 7.87 g/cm³, and a melting point of 1811 K. Its [Ar] 3d6 4s2 configuration yields an electronegativity of 1.83 and a first ionization energy of 763 kJ/mol. Known and worked since antiquity, iron has no single discoverer. The element is also essential to biology, carrying oxygen in the blood as the metal center of hemoglobin. Combining strength with low cost, it sits in group 8, period 4, among the transition metals.

물리적 성질

원자 질량 55.845 u
밀도 7.874 g/cm³
녹는점 1537.8 °C
끓는점 2860.8 °C
표준 상태에서의 상 Solid
원자 반지름 156.0 pm

전자적 성질

전기 음성도 1.83
이온화 에너지 762.5 eV
전자 친화도 15.7 eV
원자가 전자 8

전자 배치

배치 [Ar] 3d⁶ 4s²

전자껍질 배치

철의 전자껍질 배치 Fe 2e⁻ 8e⁻ 14e⁻ 2e⁻
철의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 14
4 (N) 2

주기율표에서의 위치

주기율표에서 철의 위치 Fe

발견

발견자: Ancient

철을(를) 포함하는 화합물

Science FYI에서 더 보기

Frequently Asked Questions

What is 철?
철 (Fe) is a chemical element with atomic number 26. It is a solid at standard temperature and pressure, classified as a 전이 금속.
What are the key properties of 철?
철 has an atomic mass of 55.845 u, density of 7.874 g/cm³, melting point of 1537.8°C, boiling point of 2860.8°C.
What is the electron configuration of 철?
The electron configuration of 철 is [Ar] 3d6 4s2. It is in the d-block of the periodic table.
Who discovered 철?
철 was discovered by Ancient.
What is the electronegativity of 철?
철 has an electronegativity of 1.83 on the Pauling scale.