Hometown Heating and Cooling provides thorough HVAC inspections in London, Ontario, catching small issues early with coil cleanings, tune-ups, and performance testing for peace of mind all season.
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Restore damaged teeth in London, Ontario, with esthetic crowns and onlays that blend strength, precision, and beauty.
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비소(As)는 회색의 부서지기 쉬운 준금속 고체이다. 주로 황화물 형태로 수많은 광물에 함유되어 있으나 일부 순수한 원소 모습로도 존재한다. 회색, 흑색, 검은색 등의 3가지 동소체가 있는데 가장 흔하고 진정적인 동소체는 회색 비소로서 금속비소 또는 알파비소라고도 부른다. 비소 및 비소화합물은 집적회로, 발광다이오드, 배터리 등의 산업분야에 사용되고 있다.