A. Krypton B. Potassium C. Silicon D. Sulfur 相关知识点: 试题来源: 解析 B。解析:化学符号为'K'且对神经功能重要的元素是Potassium(钾)。Krypton(氪)的符号是Kr,Silicon(硅)的符号是Si,Sulfur(硫)的符号是S。这题考查元素的化学符号与英文名称以及元素的生理功能。反馈 收藏 ...
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...
百度试题 结果1 题目Which chemical element symbol is used in making fertilizer? A. N B. Cl C. Br D. I 相关知识点: 试题来源: 解析 N。氮(N)元素用于制造肥料。氯(Cl)用于消毒等,溴(Br)用于阻燃剂等,碘(I)用于医药等。反馈 收藏
马关马关Which natural element is often used as a symbol in art?马关马关 A. 些江光发生数例他办非育济意再成资些江
The first electron affinity of an element describes the energy which is released when one mole of gaseous atoms of the element accepts one mole of electrons. It is an important quantity when predicting reactivity of non-metals.Answer and Explanation: ...
Which element has the second-highest electronegativity? ___. Electronegativity: The electronegativity of an atom of an element is a measure of the force with which the atom pulls on the shared electrons in a covalent bond. The index is important to investigate t...
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For example, it generates the (1,1.1,1.2) display such as an LCD, operation within the inner element (10), for example, a symbol to display a button or key cap top (11, image (12) It is proposed that is projected onto a) within. In order to do not want to be affected by (1...