Mendeleev couldn't help but be angry when he saw Lin Yuan mention the periodic law of the elements that he had painstakingly studied for decades before he discovered it, and in Lin Yuan's history, Mendeleev was a fiery temper, many times like a child, he was angry because of a trivial matter, and he left this matter behind him after losing his temper.

Mendeleev said angrily: "Do you know what the periodic law is? ”

Lin Yuan smiled and said, "What don't I understand, isn't it that different elements are similar in nature?" You are not the first person to discharge the periodic table, and your periodic table is also drawn on the basis of your predecessors! ”

Mendeleev said: "Since you know what the periodic law is, and you know that others have also arranged the periodic table, I believe you should know the greatness of my periodic table, which not only ranks the elements known to mankind, but also leaves some gaps in the table, guiding later people to discover new elements." ”

Lin Yuan smiled, Mendeleev saw that Lin Yuan still looked disdainful, so he said: "Let me tell you something, in 1875, a French scientist named Debois Podrand used spectroscopy to analyze the zinc ore produced in the Pyrenees......

Mendeleev suddenly stopped and asked, "Do you understand the spectrum?" ”

As soon as Lin Yuan was about to speak, Mendeleev said: "You definitely don't understand, okay, don't pretend to understand!" Let me tell you what the spectrum is, all kinds of light actually have colors, different colors of light are refracted at different angles after passing through the prism, so you can use the prism to separate the combined light, the separated light is the spectrum, different elements emit different colors of light when burning, through spectral analysis, you can know what elements a certain object is composed of. ”

"When the scientist analyzed the spectrum of zinc ore, he accidentally found two obvious purple lines, and then he applied extremely complex chemical purification methods, and finally obtained a new element, which he called 'gallium', which is also the name of the mine, and then he calculated that the density of the elemental composition of this element is 4.7 kilograms per cubic meter, and then his discovery was published in the "Proceedings of the Academy of Sciences in Paris", you will know how authoritative this newspaper is when you listen to this name."

Mendeleev said proudly: "Do you know the way? According to the periodic law of the elements that I discovered, I decided that the density of this element should be between 5.9 and 6.0, and I told De Bois de Bois to re-purify this element, and finally found that the density of this element was 5.94, see? This is the power of science, and if there is a foresight of the future in this world, then there is no doubt that I am the greatest prophet! ”

Lin Yuan smiled faintly and said, "Haven't you thought that the foundation on which you formulated the periodic table is wrong? ”

Mendeleev asked: "What did you say?" Why do you say that the foundation is wrong? ”

Lin Yuan said: "Let me ask you, what is the basis for your arrangement of the periodic table?" ”

Mendeleev said: "Let it be the atomic weight of the atom of the element and the chemical properties of the elemental element. ”

Lin Yuan smiled: "Okay, let's talk about the atomic weight of the atom, how do you get the atomic weight of the atom?" Could it be that it is not possible to weigh with balances and weights? ”

Mendeleev smiled disdainfully: "The atom is so small, how can it be weighed by a balance, the atomic mass we apply now is relative weight, which is based on oxygen, and the atomic mass of oxygen is set as one, and the weight of this atom relative to oxygen is obtained through the proportion of different substances that react with oxygen." ”

Lin Yuan nodded and said, "Well, since that's the case, are you so sure that the weight between the oxygen atom and the oxygen atom is the same?" ”

Lin Yuan's words caused everyone to laugh, and Nicholas II said: "Although I didn't understand what you said earlier, but Mr. Lin Yuan, I heard something wrong with this sentence, the same oxygen atom, why is the weight different?" ”

Mendeleev said: "See, even the layman can see that your words are ridiculous, of course the weight of oxygen atoms is the same!" ”

Lin Yuan smiled slightly, and then said, "Then let me ask you, what is the smallest thing in the world?" In other words, what is the composition of everything in this world? ”

Mendeleev said: "This question has been explained a hundred years ago, and the smallest component of this world is the atom! ”

Lin Yuan smiled and said, "In 1803, Dalton's theory, right? ”

Mendeleev nodded and said, "It seems that you still have some scientific literacy." ”

Lin Yuan smiled faintly and said: "I can tell you clearly, the mass of oxygen atoms and oxygen atoms is not the same, so the weight you get by using oxygen as a reference is inaccurate, and I don't want to say more about the specific reasons now, when you have the ability to open the atom, you will naturally understand what I mean." ”

After Lin Yuan finished speaking, he ignored everyone's surprised eyes, then nodded lightly at Nicholas II, and said, "We are leaving, we are very happy for today's dinner, and I hope that we will have another dinner!" Then he glanced at Shen Wanqing and Wang Genbao, and said with a smile: "Let's go." ”

Lin Yuan said, and walked out of the hall with the two of them, leaving Mendeleev standing on the spot in a daze, and after coming out of the hall, Shen Wanqing asked, "What do you mean by what you said to Mendeleev?" Why is the weight of the oxygen atom different from the oxygen atom? ”

Lin Yuan said with a smile: "There are nuclei and electrons in atoms, protons and neutrons in the nucleus, different atoms of elements, although the number of protons is the same, but the number of neutrons is different, so I say that the weight of oxygen atoms and oxygen atoms is different, which is called isotope in modern science." ”

"In this era, isotopes had not yet been discovered, so they used the weight of oxygen atoms as the criterion for relative weight, and in our time, this criterion was replaced by carbon atoms containing twelve neutrons, which is the relative mass of atoms mentioned in secondary school chemistry."

Shen Wanqing nodded, didn't ask again, but smiled: "That Princess Elelovna asked me a lot of things about you today!" ”

Lin Yuan smiled, the three of them returned to the post house while talking, Lin Yuan was just about to return to the room, he saw Xu Jingcheng standing in front of his door, Xu Jingcheng had been an envoy to the West when the Qing government purchased the Dingyuan ship and the Zhenyuan ship, so he was also familiar with European affairs, so Lin Yuan took him with him.

Lin Yuan thought to himself: "He doesn't sleep so late, what are you doing standing outside my room?" There must be something important. Lin Yuan then stepped forward and asked, "Lord Xu, it's so late, why don't you go to rest?" ”

Xu Jingcheng hurriedly said: "Lord Lin, I want to sleep too, but I just got a message, and I can't sleep anymore." ”

Lin Yuan hurriedly asked, "What's the news?" ”