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...
百度试题 结果1 题目The element with atomic number 1 is___. A. hydrogen B. oxygen C. nitrogen D. carbon 相关知识点: 试题来源: 解析 A。原子序数为 1 的元素是氢。氧气原子序数为 8,氮气原子序数为 7,碳原子序数为 6。反馈 收藏
The chemical element with atomic number 20 is calcium. What is the abbreviation for c
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 15 is phosphorus. What is the abbreviation fo
What element has atomic number 4?An Important Number:Elements are the substances that make up all matter in the universe. Each element is made up of only one type of atom, and cannot be further chemically broken down. Every element has a different atomic number and unique properties....
The chemical element with atomic number 14 is silicon. What is the abbreviation for s
The chemical element with atomic number 11 is sodium. What is the abbreviation for so
The chemical element with atomic number 19 is potassium. What is the abbreviation for potassium? A. 需器通没团想者术报干西细边料列需器通没团想者术报干西细边料列K需器通没团想者术报干西细边料列需器通没团想者术报干西细边料列 B. 养型常切就她整放下习着风何们象才维身事样养型常...
【题目】ElementXisametalwithatomicnumberof 47 andhasanelectronicconfiguration 2,8,18,z,2.a)Givethevalueofzinthecon figurationofmetalXb)DescribethestructureandbondinginmetalXwiththehelpofadiagram.c)Xreactswithchlorineto formachloridewith formulaXCl.StatethetypeofbondingandstructureinXCl.d)Account forthe...