9 F 플루오린 18.998 u

플루오린

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주기
2
17
블록
p-블록
상 (표준 상태)
Gas

플루오린은 모든 원소 가운데 전기음성도가 가장 크고 반응성이 가장 강하다. 치약, 테플론, 냉매에 쓰인다.

외관: 연한 노란색 기체

플루오린 개요

No element is more electronegative or more chemically aggressive than fluorine, which tops the electronegativity scale at 3.98 and reacts with almost every other substance. It is a pale yellow halogen of atomic number 9 and atomic mass 18.998, existing as a gas that condenses at 85 K. Seven valence electrons ([He] 2s2 2p5) leave it one short of a filled shell, driving a strong pull on electrons and a first ionization energy of 1681 kJ/mol. Henri Moissan first isolated the reactive element in 1886, a feat that had defeated earlier chemists. Fluorine and its compounds appear in toothpaste, in the polymer Teflon, and in refrigerants. It heads group 17, period 2.

물리적 성질

원자 질량 18.998 u
밀도 0.001696 g/cm³
녹는점 -219.7 °C
끓는점 -188.1 °C
표준 상태에서의 상 Gas
원자 반지름 64.0 pm

전자적 성질

전기 음성도 3.98
이온화 에너지 1681.0 eV
전자 친화도 328.0 eV
원자가 전자 7

전자 배치

배치 [He] 2s² 2p⁵

전자껍질 배치

플루오린의 전자껍질 배치 F 2e⁻ 7e⁻
플루오린의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 7

주기율표에서의 위치

주기율표에서 플루오린의 위치 F

발견

발견자: Henri Moissan
연도: 1886

플루오린을(를) 포함하는 화합물

Science FYI에서 더 보기

Frequently Asked Questions

What is 플루오린?
플루오린 (F) is a chemical element with atomic number 9. It is a gas at standard temperature and pressure, classified as a 할로겐.
What are the key properties of 플루오린?
플루오린 has an atomic mass of 18.998 u, density of 0.001696 g/cm³, melting point of -219.7°C, boiling point of -188.1°C.
What is the electron configuration of 플루오린?
The electron configuration of 플루오린 is [He] 2s2 2p5. It is in the p-block of the periodic table.
Who discovered 플루오린?
플루오린 was discovered by Henri Moissan in 1886.
What is the electronegativity of 플루오린?
플루오린 has an electronegativity of 3.98 on the Pauling scale.