phr. 【化学】原子序数(指元素在周期表中按次序排列的序号)40锆英英释义 a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon 访问沪江小D查看atomic number 40的更多详细解释>相关...
The meaning of ATOMIC NUMBER is an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines t
百度试题 结果1 题目What is the atomic number of an element?ps:Please answered in English 相关知识点: 试题来源: 解析 最佳答案译文,什么是元素的原子序数?It is the number of an element in thePeriodic table of the elements.反馈 收藏
将“atomic number 40"翻译成意大利文 zirconio是将“atomic number 40"翻译成 意大利文。 译文示例:Atomic number:40 Group numbers:4 ↔ Numero atomico:40 Gruppo:4 atomic number 40 noun a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron ...
Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in a n
34 An element has an atomic number of 4.Which statement about this element is correct? A A It forms ions by losing electrons. B It has four occupied electron shells in each of its atoms. C It is an unreactive gas at room temperature and pressure. D It is found in Group IV of the...
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。
The chemical element with atomic number 14 is silicon. What is the abbreviation for s
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...
b)DescribethestructureandbondinginmetalXwiththehelpofadiagram.c)XreactswithchlorinetoformachloridewithformulaXCl.StatethetypeofbondingandstructureinXCl.d)AccountforthefactthatXdeformsunderstressbutXClfractures 相关知识点: 试题来源: 解析 a) z=47-2-8-18-2=17b) where is the diagram?like:1s2s22p63s...