A. Sodium B. Magnesium C. Aluminium D. Copper 相关知识点: 试题来源: 解析 A。钠是一种质地较软且易切割的金属,在一定条件下也可表现出脆性,所以被称为“brittle metal”。选项 B 镁不是“brittle metal”;选项 C 铝不是“brittle metal”;选项 D 铜不是“brittle metal”。反馈...
This element is a metal and has a high melting point. Where is it located in the periodic table? A. In group 1 B. In group 2 C. In group 17 D. In group 18 相关知识点: 试题来源: 解析 A。金属且熔点高通常在周期表中的第一主族。周期表分为横行叫周期,纵列叫族。第一主族元素多为...
Which of the following elements reacts like a metal? a. O b. Ne c. Ca d. F Which element in Fe(NO)_3 is a metal? (a) N (b) O (c) Fe. Which of the following elements is an alkali metal? a. Be b. Ce c. N d. K e. Br Which element in NH_4VO_...
The metal element section which is chosenPROBLEM TO BE SOLVED: To provide a coated metal formed and fabricated material that has superior adhesion with a molded product of a thermoplastic resin composition, and can be easily manufactured.森川 茂保...
Fe is in vivo content richest transition metallic element, is one of human body essential trace elements.It distributes very broadly, nearly all organizations in the human body all includes the iron.It has the close relationship with the health.The iron is the hemoglobin important component, is...
This element is a non-metal and is very reactive. Where can it be found in the periodic table? A. In group 17 B. In group 18 C. In group 15 D. In group 16 相关知识点: 试题来源: 解析 A。非金属且非常活泼通常在周期表中的第十七族。第十七族元素为卤族元素,都是非金属且非常活泼。
Among these elements, which one is a non - metal element known for its excellent electrical conductivity? A. Silver B. Copper C. Graphite D. Iron 相关知识点: 试题来源: 解析 C。解析:Graphite(石墨)是碳的一种同素异形体,属于非金属元素,它以良好的导电性而闻名。Silver(银)、Copper(铜)和Iron...
awhen the pain of holding on is greater than the pain of letting go,it's time to let go. 当财产的疼痛上大于放开的疼痛,是时候放开。 [translate] a禁止事项 Prohibition item [translate] aA monolithic metal is an element that can readily lose electrons to form positive 正在翻译,请等待... ...
What is the symbol and atomic number of chromium? What is the first element on the periodic table? Hint: It has one electron! Fe is the symbol for which element? a. Francium b. Fermium c. Astatine d. Iron What is the symbol of the element in Group 4A(14) and Period 2 in the pe...
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