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Dmitri Mendeleev was able to use his Periodic Table to make predictions because he organized elements based on their Atomic Mass and properties, revealing periodic trends. By identifying gaps in his table, he could anticipate the existence and characteristics of undiscovered elements. This predictive power was validated when elements like gallium and germanium were later found, aligning with Mendeleev's predictions. His systematic approach highlighted the underlying patterns in elemental properties, solidifying the periodic law.
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What were mendeleevs discoveries and predictions and discoveries abot the periodic table?
Mendeleev predicted that properties of elements are periodic function of atomic mass. He demonstrated it by creating a table.
Summarize how the periodic table is organized and tell this organization is useful?
The number of electrons an element has determine the organization. This table helps in making predictions about how an element will chemically react.
What complete family of chemical did mendeleev leave out of his periodic table?
Mendeleev left out the noble gases (Group 18) from his periodic table because they were not discovered yet at the time he developed the table. These elements were later added to the periodic table as they were discovered.
Which element was discovered after the original table was developed?
One element that was discovered after the original periodic table was developed is gallium. It was identified in 1875 by French chemist Paul Emile Lecoq de Boisbaudran, well after Dmitri Mendeleev created the first periodic table in 1869. Gallium's discovery confirmed the predictions made by Mendeleev regarding the existence of undiscovered elements in his periodic table.
What is the name of the table of elements?
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
Were Meneleev's predictions correct?
If you mean his predictions about the periodic table then yes his predictions were correct.
What is the greatest triumph about mendeleev's periodic table?
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.
What were mendeleevs discoveries and predictions and discoveries abot the periodic table?
Mendeleev predicted that properties of elements are periodic function of atomic mass. He demonstrated it by creating a table.
Why did Mendeleev leave three spaces on the periodic table?
Because those elements were not known when he formulated his periodic table.
What evidence would have refuted Mendeleev's predictions?
A clear refutation of Mendeleev's predictions would have been discovering elements that did not fit into his periodic table based on atomic weight and properties. If the properties of elements did not repeat in a periodic manner when arranged by atomic weight, this would have refuted his periodic law.
Why was Mendeleev's periodic table considered a good model?
Mendeleev's periodic table was considered a good model because it organized elements based on their atomic mass and properties, allowing for predictions of undiscovered elements and their properties.
Why did Dmitri Mendeleev leave spaces in the periodic table?
Because
Summarize how the periodic table is organized and tell this organization is useful?
The number of electrons an element has determine the organization. This table helps in making predictions about how an element will chemically react.
What category of elements is the most common in the periodic table and where is that category found in the periodic table?
The transition metals are the most common, and are found in the middle (groups 3-12) of the periodic table.
What complete family of chemical did mendeleev leave out of his periodic table?
Mendeleev left out the noble gases (Group 18) from his periodic table because they were not discovered yet at the time he developed the table. These elements were later added to the periodic table as they were discovered.
What is periodic table a list of?
chemical elements
Which element was discovered after the original table was developed?
One element that was discovered after the original periodic table was developed is gallium. It was identified in 1875 by French chemist Paul Emile Lecoq de Boisbaudran, well after Dmitri Mendeleev created the first periodic table in 1869. Gallium's discovery confirmed the predictions made by Mendeleev regarding the existence of undiscovered elements in his periodic table.
