题目 举报元素符号Ar表示什么物质~扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析解答一举报Ar元素符号:Ar中文名称:氩英文名称:Argon原子序数:18原子量:39.95外围电子排布:3s2 3p6核外电子排布:2,8,8常见化合价:0密度:0.0017824溶点:-189.2沸点:-185.7所属周期:3所属族数:0原子半径:0.88离子半径:共价半径:0.98同位素及放射性:Ar-36 Ar-38 *Ar-40发现人:Sir William Ramsey,Baron Rayleigh发现时间:1894发现地点:苏格兰名称由来:Greek:argos (inactive).元素描述:Colorless,odorless,tasteless noble gas.It is the third most abundant element in the earth's atmosphere and makes up about 1%.元素来源:Continuously released into the air by decay of radioactive potassium-40.Pure form is obtained from fractional distillation of liquid air.元素用途:Used in lighting products.It is often used in filling incandescent light bulbs.Some is mixed with krypton in fluorescent lamps.Crystals in the semiconductor industry are grown in argon atmospheres.解析看不懂？免费查看同类题视频解析查看解答