Which element has the symbol "O" and is essential for respiration? A. Oxygen B. Osmium C. Gold D. Silver 相关知识点: 试题来源: 解析 A。解析:题干问的是符号为“O”且对呼吸至关重要的元素。A选项Oxygen(氧),符号为“O”,是呼吸作用必需的元素;B选项Osmium(锇),符号为“Os”;C选项Gold(金...
The element which is used in making semiconductors and has the symbol Si. What is its
A. Neon B. Nickel C. Nitrogen D. Sodium 相关知识点: 试题来源: 解析 A。解析:Neon(氖)是一种惰性气体,符号为“Ne”。B选项Nickel(镍),符号为“Ni”;C选项Nitrogen(氮),符号为“N”;D选项Sodium(钠),符号为“Na”,所以答案为A。反馈 收藏 ...
百度试题 结果1 题目Which element is represented by the symbol “Fe”? A. Iron B. Gold C. Silver D. Copper 相关知识点: 试题来源: 解析 A。解析:元素符号“Fe”代表铁(Iron)。金是“Au”,银是“Ag”,铜是“Cu”。反馈 收藏
The element with the symbol 'K' is in which period of the periodic table? A. Period 1 B. Period 2 C. Period 3 D. Period 4 相关知识点: 试题来源: 解析 C。解析:元素符号为“K”的钾元素位于周期表的第三周期。第一周期元素为氢、氦,第二周期元素为锂、铍等,第四周期元素有钾之后的钙等...
Which element has the largest atomic size? (a) B (b) Ga (c) Ti. The trends of the atomic radii of Group 13 elements: Atomic radius is the distance between the nucleus and the outer shell. The trends of almost all groups increase down the group including group 13 elements, ...
Which chemical element has the symbol Be? What element will be more reactive with another element? Explain. Which chemical element has the symbol As? Which type of element typically loses an electron to become an ion? Which one of the elements below has the lowest ionization energy? Explain ...
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