百度试题 结果1 题目25 Selenium, Se, is in the same group of the Periodic Table as sulfur, S What is the formula of sodium selenide? A ANa2Se BNaSeO C Na2SeO D Na SeO: 相关知识点: 试题来源: 解析 A 反馈 收藏
What is the group number in the periodic table of X, a representative element, in each of the following ionic compounds. 1. X2O3 2. X2SO3 3. Na3X Representative elements: Representative elements involve the filling of s an...
What group is neon in on the periodic table? What is the maximum number of electrons that can occupy the 2s orbital? What is the difference between an orbital and an energy level? What is the electron configuration of the Cu+ ion?
What is the only block on the periodic table that contains metalloids? List the symbols of all inert gases. To which group of the periodic table do exceptionally inert gases belong? Why are they inert? What are metalloids? A) elements found in asteroids B) elements that are smaller than me...
structure, properties and reactions of such compounds, which along with carbon, contain other non-carbon elements such as hydrogen, sulfur and silicon. Organic chemistry is used in many applications, as described by theACS, such as biotechnology, the petroleum industry, pharmaceuticals and plastics....
Artwork: The Periodic Table of the elements. So what? Atoms in a certain group (column) tend to have similar properties. So, for example, the red column on the right contains the Noble Gases (helium, neon, argon, krypton, and so on), which are relatively unreactive. The pink column ...
To find the outer shell electronic configuration of the chalcogens, we need to look at the elements in Group 16 of the periodic table. The chalcogens include the following elements: oxygen (O), sulfur (S), selenium (Se), and tellurium (Te). 1. Identify the Group: - Chalcogens are...
S - Sulfur Cl - Chlorine Ar - Argon K - Potassium Ca - Calcium Element Symbols and Numbers The number of the element is its atomic number, which is the number of protons in each atom of that element. The element symbol is a one- or two-letter abbreviation of the element's name. So...
Understand the facts about zinc and where it is on the periodic table. Related to this QuestionWhat are the physical and chemical properties of metals? What are the chemical properties of tin? What are the chemical properties of sulfur? What are the chemical properties of chromium? What are ...
a mixture of sulfur, potassium nitrate and carbon. types of mixtures there are two main types of mixtures: homogeneous mixtures and heterogeneous mixtures . the types of mixtures are discussed below. 1. what is a heterogeneous mixture? a mixture of sand mixed with salt is an example of a ...