The chemical element with atomic number 20 is calcium. What is the abbreviation for c
To determine which block the element with atomic number 56 belongs to, we can follow these steps:Step 1: Identify the Element The element with atomic number 56 is Barium (Ba).Step 2: Determine the Electron Config
The chemical element with atomic number 11 is sodium. What is the abbreviation for so
1 An atom of an element has an atomic number of 6 and a mass number of 12.(a)Using this information, complete the table to show the numbers of protons,neutrons and electrons in one atom of this element.(2)number of protons number of neutrons number of electrons(b)The Periodic Table ...
Definite identification has been made of an isotope of the element with atomic number 98 through the irradiation ofCm242with about 35-Mev helium ions in the Berkeley Crocker Laboratory 60-inch cyclotron. The isotope which has been identified has an observed half-life of about 45 min. and is ...
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...
30A business glossary should contain not only the agreed-upon definition for a data element, but any variations or dependencies associated with that element.一个业务术语表不但应该包含商定的数据元素定义，还应该包含与这个元素相关联的任何变体或依赖项。词义辨析 n.(名词)element, component, constituent, ...
it is alkali metal.The element with atomic number 55 belongs to which block of the periodic table
A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确...
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。