28 Ni 니켈 58.693 u

니켈

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주기
4
10
블록
d-블록
상 (표준 상태)
Solid

니켈은 주화, 스테인리스강, 합금에 쓰이는 내식성 전이 금속이다. 충전지와 촉매 작용에도 쓰인다.

외관: 광택 있는 금빛을 띤 은색 금속

니켈 개요

Corrosion-resistant and tough, nickel is a silvery transition metal with a faint golden tinge, used in coinage, stainless steel, and a wide range of alloys. It has atomic number 28 and an atomic mass of 58.693, a density of 8.91 g/cm³, and a melting point of 1728 K. Its [Ar] 3d8 4s2 configuration gives an electronegativity of 1.91 and a first ionization energy of 737 kJ/mol. Axel Fredrik Cronstedt first isolated the metal in 1751. Beyond structural alloys, nickel serves in rechargeable batteries and as a catalyst. It occupies group 10, period 4.

물리적 성질

원자 질량 58.693 u
밀도 8.908 g/cm³
녹는점 1454.8 °C
끓는점 2729.8 °C
표준 상태에서의 상 Solid
원자 반지름 149.0 pm

전자적 성질

전기 음성도 1.91
이온화 에너지 737.1 eV
전자 친화도 112.0 eV
원자가 전자 10

전자 배치

배치 [Ar] 3d⁸ 4s²

전자껍질 배치

니켈의 전자껍질 배치 Ni 2e⁻ 8e⁻ 16e⁻ 2e⁻
니켈의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 16
4 (N) 2

주기율표에서의 위치

주기율표에서 니켈의 위치 Ni

발견

발견자: Axel Fredrik Cronstedt
연도: 1751

니켈을(를) 포함하는 화합물

Science FYI에서 더 보기

Frequently Asked Questions

What is 니켈?
니켈 (Ni) is a chemical element with atomic number 28. It is a solid at standard temperature and pressure, classified as a 전이 금속.
What are the key properties of 니켈?
니켈 has an atomic mass of 58.693 u, density of 8.908 g/cm³, melting point of 1454.8°C, boiling point of 2729.8°C.
What is the electron configuration of 니켈?
The electron configuration of 니켈 is [Ar] 3d8 4s2. It is in the d-block of the periodic table.
Who discovered 니켈?
니켈 was discovered by Axel Fredrik Cronstedt in 1751.
What is the electronegativity of 니켈?
니켈 has an electronegativity of 1.91 on the Pauling scale.