In 1869, a Russian chemist named Dmitri Mendeleev proposed the first periodic table. Mendeleev arranged the elements in order of increasing atomic weight. He also noticed that the properties of the elements repeated in a periodic way. This led to the development of the modern periodic table. Tod...
aDmitri Mendeleev published the first periodic table in 1869. He showed that when the elements were ordered according to atomic weight, a pattern resulted where similar properties for elements recurred periodically. Based on the work of physicist Henry Moseley, the periodic table was reorganized on...
Do you know who described thefirst periodic tableof the elements that organized the elements by increasingatomic weightand according to trends in their properties? If you answered "Dmitri Mendeleev," then you might be incorrect. The actual inventor of the periodic table is someone rarely mentioned ...
A. His periodic table was based on valence. B. He was a scientist from France. C. His periodic table was the first table in the world. D. He arranged the first periodic table accepted widely.( B )3. How many scientists are mentioned in the passage? A. Two. B. Three. C. Four....
Hydrogen is the first element in the periodic table. It is a colorless, odorless, and tasteless gas. Hydrogen is the lightest element with an atomic number of 1. Hydrogen has many important properties. It is highly flammable and can react explosively with oxygen. However, when burned in air...
百度试题 结果1 题目Who produced the first modern Periodic Table? Was it A. Demetrius B. Dalton C. Newlands D. Döbereiner E. Mendeleev? 相关知识点: 试题来源: 解析 E 反馈 收藏
In 1869, Russian chemist Dmitry Mendeleyev published the first periodic table of elements, writing the chemical properties and masses of each element on cards. He arranged the cards according to increasing atomic mass and found that elements of similar properties appeared at regular intervals. But...
Figure 1. (a) Dimitri Mendeleev is widely credited with creating (b) the first periodic table of the elements. (credit a: modification of work by Serge Lachinov; credit b: modification of work by “Den fjättrade ankan”/Wikimedia Commons) ...
The Periodic Table is the most representative icon of chemistry, because it contains all the chemical elements currently known, which constitute the true bricks of the universe. In 1869 the Russian chemist Dimitri Mendeleyev published his first periodic table, placing in order the 63 elements known...
题目___ is the first element on the periodic table, making it the lightest element. Since it is so light, it rises in the atmosphere and is therefore rarely found in its pure form.相关知识点: 试题来源: 解析 Hydrogen 反馈 收藏