The element with atomic number 14 is? A. Silicon B. Phosphorus C. Sulfur D. Chlorine 相关知识点: 试题来源: 解析 A。解析:原子序数为 14 的元素是硅元素。磷元素原子序数为 15,硫元素原子序数为 16,氯元素原子序数为 17。所以答案是 A。
and used doped or in combination with other materials in glass, semiconducting devices, concrete, brick, refractories, pottery, and silicones. Atomic number 14; atomic weight 28.086; melting point 1,414°C; boiling point 3,265°C; specific gravity 2.33 (25°C); valence 2, 4. SeePeriodic Ta...
Silicon element. Symbol Si. Atomic number 14. Atomic mass 28.085. Green circle.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度
To find the atomic number of the element placed diagonally to Group 14, Period 4, we will follow these steps:Step 1: Identify the Element in Group 14, Period 4 - The elements in Group 14 (also known as Group IV) include Carbon
Astatine: the element of Atomic Number 85. Nature 159, 24-24, doi:10.1038/159024b0 (1947).Corson DR, Mackenzie KR, and Segre E. Astatine - the element of atomic number-85. Nature. 1947;159:24.Corson, D. R., Mackenzie, K. R., Segre, E. G., "Astatine: Element of Atomic Number...
What element has a mass number of 14?Mass Number:A mass number is the total of all the protons and neutrons in the nucleus of a particular atom. Each of these subatomic particles contributes a single unit to the total mass of the atom. Mass numbers differ from the atomic mass on the ...
an element is a substance , all of ___ atoms have the same atomic number为什么选whose ? 请高手讲讲..相关知识点: 试题来源: 解析 首先句子后面是作定语的,由主句可以知道,修饰的是主语element.因为atoms是原子的意思,对于元素来说,逻辑关系自然是“元素里的原子”,所以element和atoms具有从属关系,用whose...
To determine the valency of an element with an atomic number of 15, we can follow these steps:1. Identify the Element: The atomic number of 15 corresponds to the element Phosphorus (P).2. Determine the Electr
Al, aluminum, atomic number 13 aluminium foil, aluminum foil, tin foil - foil made of aluminum metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. potash alum, potassium alum, alum - a...
结果1 题目元素周期表 Which element has the atomic number 29? A. Gold (Au) B. Tin (Sn) C. Copper (Cu) D. Zinc (Zn) 相关知识点: 试题来源: 解析 C) Copper (Cu) 答案: C) Copper (Cu) ... (继续展示其他试题及答案)反馈 收藏 ...