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Why was mendeyeve able to predict the existence of other elements?
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What can you use the Periodic Table of Elements for to predict about the elements?
An element's physical and chemical properties. You can also predict what elements will bond with each other.
Predict that state of matter and the chemical reactivity of krypton?
Based on the other elements in the same group, like helium and neon, you can predict that it is a gas under normal conditions, and it is not chemically reactive.
Can you use the periodic table to predict the properties of undiscovered elements?
It is quite true that you can use the periodic table to predict the chemical properties of undiscovered elements, but this is not of any great practical importance because any remaining undiscovered elements are going to be so heavy that they will be very unstable, and will rapidly decay into other, lighter elements. All elements having a stable nucleus have already been discovered. Once you get to elements heavier than uranium, they just get more and more unstable, the heavier they get.
Why couldn't Mendeleev predict the existence of the noble gases in the periodic table of elements?
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
Why did the population grow slowly for most of human existence?
Birthrates, Death Rates, and the age structure of a population help predict why some countries have high growth rates while other countries grow more slowly.
What is the important work of Dmitri Mendeleev?
Mendeleev was the inventor of the Periodic Table. He organized all the known elements into the periodic table based on atomic number. He was also able to predict the existence of elements that had not yet been discovered based on gaps in the table he created. Based on observations of other elements in the groups he was also able to predict the characteristics of these unknown elements as well. NICE! dude
What can you use the Periodic Table of Elements for to predict about the elements?
An element's physical and chemical properties. You can also predict what elements will bond with each other.
How periodic table was invented?
The Periodic Table was invented by Dmitry Mendeleyev. He grouped every known element and he used this table to predict the existence of other several elements. Mendelevium name pays homage to Dmitry Mendeleyev.
How was mendeleyev able to predict the existence of elements that had not yet discovered?
Because there were gaps in the periodic table, which he invented. Unlike other scientist of the time who tried to make the elements fit theircategorising system, such as Newlands and his law of octaves, Mendeleev came to the conclusion that they had not discovered all the elements as he noticed patterns that allowed you to categorise elements if you left gaps that undiscovered elements could fill.
How can you use the arrangement of elements in the periodic table to predict how they will react with other elements to form compounds?
bc the valence e-
What can we predict from an elements location on the periodic table?
You can predict it's physical state, atomic size, atomic weight, electron effinity, charge, and other physical characteristics.
How was mendeleev able to predict the discovery of unknown elements?
Mendeleev arranged the elements in a table ordered by atomic mass, corresponding to relative molar mass as defined today. Mendeleev predicted the discovery of other elements and left space for these new elements, namely eka-silicon (germanium), eka-aluminium (gallium), and eka-boron (scandium). Thus, there was no disturbance in the periodic table.
Predict that state of matter and the chemical reactivity of krypton?
Based on the other elements in the same group, like helium and neon, you can predict that it is a gas under normal conditions, and it is not chemically reactive.
How could Mendeleevs table be used to predict the properties of elements that had not been discovered?
Comparing the properties of the new element with the properties of the other elements in the group we can make this prediction.
Are there 1000 different elements in the existence?
No. There are 118 currently known elements, of which 98 exist in nature. The other 20 have only been produced in laboratories. Elements beyond that would be too unstable to exist.
Can you use the periodic table to predict the properties of undiscovered elements?
It is quite true that you can use the periodic table to predict the chemical properties of undiscovered elements, but this is not of any great practical importance because any remaining undiscovered elements are going to be so heavy that they will be very unstable, and will rapidly decay into other, lighter elements. All elements having a stable nucleus have already been discovered. Once you get to elements heavier than uranium, they just get more and more unstable, the heavier they get.
Why couldn't Mendeleev predict the existence of the noble gases in the periodic table of elements?
He could predict other elements because there was an obvious gap, but he couldn't predict the noble gases because he didn't realize that there was going to be an 18th group since none of them were yet discovered. When he first started organizing the periodic table, the pattern still made sense even without the noble gases.
