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On the peridoic table why are the missing elements have spaces but yet are not discovered. How do we know about these elements?
Wiki User
∙ 12y ago
Becuase the table goes in order. starting with hydrogen wiht 1 proton. then it goes higher and higher to something like 112 protons and 165 neutrons, but we havent found out what has 113 protons and 171 neutrons, but we do know the element that has lets say, 119 protons and x amount of neutrons. that's why t here are spaces.
Wiki User
∙ 12y ago
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Why did Dmitri leave blank on the preodic table?
There is no specific reason mentioned for why Dmitri Mendeleev left blank spaces on the periodic table. It is believed that he left these spaces to accommodate elements that were yet to be discovered or to demonstrate the existence of elements with certain properties that were predicted but not yet confirmed. These blank spaces eventually led to the discovery of new elements and validated Mendeleev's periodic table.
How did Mendeleev predict the existence of unnatural elements?
He left blank spaces in the periodic table in the correct grouping and period that is where the newly discovered elements were placed.
What did Mendeleev do that was so important?
He created a periodic table arranged by atomic mass. He wasn't the first, but he was the first to leave spaces in his table for unknown elements. At his time, there were only 63 known elements. Based on the elements around the blank space, scientists could predict the properties of the unknown element. The spaces were filled in when they were discovered.
Why did Mendeleev leave spaces in his table?
Because he knew from his already discovered periods and groups of elements that the gaps would be filled by newly discovered elements. If you have a gap such as this, 3d5__3d7 along a period's outer valance level you can predict, which Mendeleev did, that the element with the outer valance number, 3d6, will be found in the future.
How did Mendeleev know where to leave the spaces in his periodic table?
mandeleev didn't know spaces in the Periodic Table because he doesn't arrange it john Kepler arrange it most of mendeleev discoveries of elements are few most of other element where discover by other scientist after him in 19th century
How many blank spaces did Mendeleev leave in the periodic table which represented elements that had not yet been discovered?
Mendeleev left 3 blank spaces for the elements that had not yet been discovered.
How many blank spaces were in mendeleeves periodic table?
There were 3 blank spaces in mendeleev's Periodic Table. He left it for the elements which were not discovered at that time.
What is the difference between synthetic elements and other elements?
Synthetic elements are those which have been produced by scientists in a laboratory, but not yet discovered occurring naturally. They are true elements because they occupy missing spaces on the periodic chart....they adjust the number of electrons, i.e., in one element to create another.
Why did Dmitri leave blank on the preodic table?
There is no specific reason mentioned for why Dmitri Mendeleev left blank spaces on the periodic table. It is believed that he left these spaces to accommodate elements that were yet to be discovered or to demonstrate the existence of elements with certain properties that were predicted but not yet confirmed. These blank spaces eventually led to the discovery of new elements and validated Mendeleev's periodic table.
What was Mendeleev's contribution to the knowledge of elements?
When making his periodic table Mendeleev noticed some spaces where elements should be couldn't be filled. He didn't want to force elements that didn't belong there to go there, so he believed the spaces were undiscovered elements. He left the names blank but predicted their properties. Later the elements Mendeleev predicted existed were discovered.
How did Mendeleev predict the existence of unnatural elements?
He left blank spaces in the periodic table in the correct grouping and period that is where the newly discovered elements were placed.
Why did Mendeleev leave blanks in his early version of the periodic table?
At the time the periodic table was first devised, there were many elements that had not yet been discovered. Their existence could be inferred, but they couldn't actually be put into the table until they were discovered.When the periodic table was first devised, there were lots of elements that had not been discovered yet.
Is there room on the periodic table for new elements to be discovered?
yes, and if you look at an updated chart, you would see that some empty spaces are already there, because we know that these elements DO exist, but we just havent found them yet
What did Mendeleev do that was so important?
He created a periodic table arranged by atomic mass. He wasn't the first, but he was the first to leave spaces in his table for unknown elements. At his time, there were only 63 known elements. Based on the elements around the blank space, scientists could predict the properties of the unknown element. The spaces were filled in when they were discovered.
Why did Mendeleev leave spaces in his table?
Because he knew from his already discovered periods and groups of elements that the gaps would be filled by newly discovered elements. If you have a gap such as this, 3d5__3d7 along a period's outer valance level you can predict, which Mendeleev did, that the element with the outer valance number, 3d6, will be found in the future.
Why was Mendeleev's decision to leave blank spaces on his table sometime referred to as his most significant contribution to periodic table?
Mendeleev thought about the future and realized that it was entirely unlikely that all earthly elements had been discovered, so he left blank spaces in his table and even predicted some of the elements that would fit in those spaces. Surprisingly enough, as time passed, chemists began discovering many of the elements that he had predicted, which fit perfectly into his periodic table.
How did Mendeleev know where to leave the spaces in his periodic table?
mandeleev didn't know spaces in the Periodic Table because he doesn't arrange it john Kepler arrange it most of mendeleev discoveries of elements are few most of other element where discover by other scientist after him in 19th century
