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.
elements not yet known to exisits
Dmitri Mendeleev's greatest triumph with the periodic table was his ability to predict the properties of undiscovered elements. Gaps in the table led him to propose the existence of new elements with specific characteristics, which were later discovered and matched his predictions, confirming the validity of his periodic law.
It depends on the pressure. At standard atmospheric pressure (1 atm), elements such as Mercury and Bromine are liquid at 1000 degrees Celsius.
DiscoVery of new elements
There are 118 known chemical elements as of 2011.
No around 118.
There aren't 1000 different alphabets in existence. You might possibly be confusing the word "alphabet" with the word "letter."
My guess is that there are isotopes and ions of each element that count as different atoms.
Mendeleev predicted the existence of unnatural elements by leaving gaps in his periodic table for elements that had not yet been discovered. He used the properties of known elements around these gaps to infer the characteristics of the missing elements, thereby predicting their existence. This approach proved successful when later discoveries confirmed the existence of these predicted elements.
Dalton
1000
Dalton believed that there was a different atom for each element that there was, and that these atoms made up the elements that were in existence. He did not say exactly how these atoms were different, just that they were different. Dalton also believed that all of the atoms for a given element were exactly alike in every way.
a lot probaly over 1000 elements
elements not yet known to exisits
Dmitri Mendeleev's greatest triumph with the periodic table was his ability to predict the properties of undiscovered elements. Gaps in the table led him to propose the existence of new elements with specific characteristics, which were later discovered and matched his predictions, confirming the validity of his periodic law.
1000 years ago
The periodic table organized elements based on their properties, allowing scientists to identify gaps in the table where new elements might exist. By examining the patterns in elemental properties, such as atomic number and electron configuration, scientists could predict the properties of undiscovered elements and guide their search for these elements. This helped in anticipating the existence and properties of elements before they were officially discovered.