百度试题 结果1 题目How many elements are there in the periodic table today? A. 100. B. 118. C. 120. D. 150. 相关知识点: 试题来源: 解析 B。原因:“Today, the periodic table contains 118 elements.”。 反馈 收藏
1)This question is about the Periodic Table.a) How many elements are there in period 3 of the Periodic Table?(1)b)Place the first 3 elements of period 3 in order of increasing reactivity.(1)c) Explain your reasoning to part (b).(1)d) Mark with an × the statement that best ...
How many groups does the periodic table have? A. 16 B. 7 C. 18 D. 8 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: B 复制 纠错 举一反三 银银平台门户网站支持合作机构填写或上传()。 A. 拟准入产品尽调信息 B. 本机构产品营销...
The Periodic Table: A. How is the periodic table organized? B. The periodic table is organized by increasing atomic number and grouped based on similar chemical properties. C. What is the significance of the periodic table? D. The periodic table helps in predicting the properties of elements ...
The periodic table helps us understand ___ elements react with each other. A. how B. what C. when D. where 相关知识点: 试题来源: 解析 A。“understand how elements react with each other”表示“理解元素是如何相互反应的”,how 表示方式。反馈 收藏 ...
That pun is based on the fact that the main building blocks in the branch of science are chemical elements, pure substances made from a single type of atom. But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to...
B。解析:“Finally, the periodic table may play a role in addressing some of the major challenges facing our world today. For instance, it could be used to develop new energy sources or to find solutions to environmental problems.”表明元素周期表可以通过开发新能源和找到环境问题的解决方案来应对...
<p>To determine how many elements are present in the d-block of the periodic table, we can follow these steps:</p><p><strong>Step 1: Identify the d-block Elements</strong> The d-block elements are also known as transition metals. They are found in groups
In how many different ways can the first 12 natural numbers be divided into three different groups such that numbers in each group are in A.P.? a.1b.5c.6d.4 View Solution How many groups and periods are present in the modern periodic table ?
Related:Periodic table of elements quiz: How many elements can you name in 10 minutes? Who created the periodic table? Dmitri Mendeleev, a Russian chemist and inventor, is considered the "father" of the periodic table, according to theRoyal Society of Chemistry. In the 1860s, Mendeleev was ...