What element from the first 10 elements would be most similar in properties to the element of atomic number 115 (presently unknown)? The first and second electron shells of an element are filled and there are two electrons in the third electron shell. What is the atomic number for this elem...
What element has the atomic number 82? What element is atomic number 54? What element has an atomic number of 88? What element has an atomic number of 11? What element has the atomic number 74? What element has the atomic number 27?
结果一 题目 What is the atomic number of an element?ps:Please answered in English 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.相关推荐 1What is the atomic number of an element?ps:Please answered in English ...
What is the atomic number of the element present in the second period and group 15. View Solution The effective nuclear charge of an element with three valence electrons is 2.60. What is the minimum atomic number of the element? View Solution ...
The chemical element with atomic number 20 is calcium. What is the abbreviation for calcium? A. Ca B. Cy C. Cg D. Ch 相关知识点: 试题来源: 解析 A。钙元素的英文是 calcium,其缩写形式是 Ca。选项 B“Cy”不是钙元素的缩写;选项 C“Cg”一般不是任何化学元素的缩写;选项 D“Ch”一般不是...
The chemical element with atomic number 15 is phosphorus. What is the abbreviation for phosphorus? A. P B. Ph C. Po D. Py 相关知识点: 试题来源: 解析 A。磷元素的英文是 phosphorus,其缩写形式是 P。选项 B“Ph”一般不是磷元素的缩写;选项 C“Po”是钋元素的缩写;选项 D“Py”不是磷元素...
The chemical element with atomic number 12 is magnesium. What is the abbreviation for magnesium? A. Mg B. Mn C. My D. Mh 相关知识点: 试题来源: 解析 A。镁元素的英文是 magnesium,其缩写形式是 Mg。选项 B“Mn”是锰元素的缩写;选项 C“My”不是镁元素的缩写;选项 D“Mh”不是镁元素的...
The chemical element with atomic number 14 is silicon. What is the abbreviation for silicon? A. Si B. Sy C. Sg D. Sn 相关知识点: 试题来源: 解析 A。硅元素的英文是 silicon,其缩写形式是 Si。选项 B“Sy”不是硅元素的缩写;选项 C“Sg”一般不是任何化学元素的缩写;选项 D“Sn”是锡元素...
So, in the above example of lead, its atomic number is 82 and that does not change; if it did, it would be a different element (thallium, atomic number 81, or bismuth, atomic number 83). The number of neutrons in the nucleus, as you may have gathered from the above example, can ...
An atom has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar? (Atomic numbers are given in parentheses). N(7), F(9), P(15), Ar(18) View Solution An element has electronic configuration 2, 8, 3. What is the atomic number of th...