75 Re 레늄 186.21 u

레늄 개요

Rhenium (Re) is one of the rarest elements in Earth's crust and among the densest, a heat-resistant transition metal in group 7 of period 6, the d-block. It has an atomic mass of 186.21, the electron configuration [Xe] 4f¹⁴ 5d⁵ 6s², and a Pauling electronegativity of 1.9. Its very high melting point suits it to the nickel-based superalloys of jet-engine turbine blades, where small additions markedly improve high-temperature strength. Rhenium also serves as a catalyst in petroleum refining, notably for producing high-octane gasoline. Solid at standard conditions, it can adopt a wide range of oxidation states.

물리적 성질

원자 질량 186.21 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.9

전자 배치

배치 [Xe] 4f¹⁴ 5d⁵ 6s²

전자껍질 배치

레늄의 전자껍질 배치 Re 2e⁻ 8e⁻ 18e⁻ 32e⁻ 13e⁻ 2e⁻
레늄의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 13
6 (P) 2

주기율표에서의 위치

주기율표에서 레늄의 위치 Re

Frequently Asked Questions

What is 레늄?
레늄 (Re) is a chemical element with atomic number 75. It is a solid at standard temperature and pressure, classified as a 전이 금속.
What are the key properties of 레늄?
레늄 has an atomic mass of 186.21 u.
What is the electron configuration of 레늄?
The electron configuration of 레늄 is [Xe] 4f14 5d5 6s2. It is in the d-block of the periodic table.
What is the electronegativity of 레늄?
레늄 has an electronegativity of 1.9 on the Pauling scale.