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True or false mendeleev also grouped elements that has similar properties?
True. Mendeleev organized the elements into the periodic table based on their atomic weight and similar chemical properties. He noticed that elements with similar properties tended to occur at regular intervals, leading to the periodicity of the elements.
The first periodic table of elements was created in 1995?
false
Mendeleevs periodic table of elements was created in 1901?
Actually, Dmitri Mendeleev formulated the periodic law and published his periodic table of elements in 1869. This table arranged elements by increasing atomic mass and grouped them based on similar properties, predicting the properties of missing elements. It was a significant contribution to the field of chemistry.
Is it true or false that Mendeleev and other scientists were able to use the periodic table to predict the properties of undiscovered elements?
True. Mendeleev and other scientists used the periodic table to predict the properties of undiscovered elements based on their position in the table. This led to the successful discovery and confirmation of elements like gallium and germanium.
Mendeleev's periodic table was accurate enough that he was able to use it to predict the existence and several properties of certain elements that had not yet been discovered true or false?
True.
Is the following sentence true or false Mendeleev used his periodic table to predict the properties of undiscovered elements. Today and Periodic Table?
True. Mendeleev used his periodic table to predict the properties of undiscovered elements by leaving gaps for them based on the patterns he observed in the properties of known elements. His predictions were later confirmed with the discovery of elements like gallium and germanium, which closely matched his forecasts. This ability to predict properties based on periodic trends is a key aspect of the periodic table's significance in chemistry.
True or false Mendeleev needed to organize information about 63 elements?
True
Was The first periodic table of elements Mendeleev created contained only 65 elements.?
its false no cap
Are elements with similar properties found in the same period or group on the periodic table True or False?
True. Elements with similar properties are typically found in the same group (vertical column) on the periodic table due to a similar arrangement of their outer electrons and valence shell. Elements in the same period (horizontal row) have different properties but share the same number of electron shells.
The first periodic table of elements Mendeleev created contained only only 70?
It’s true apex
Physical properties within a period are more alike than physical properties within a group true or false?
False. Physical properties within a group (vertical columns) in the periodic table are more alike than physical properties within a period (horizontal rows). This is because elements within a group have similar electron configurations, leading to similar chemical behavior.
True or false The properties of a compound are limited to the individual properties of its constitutive elements?
False. The properties of a compound are not just the sum of its constituent elements, but are instead determined by the way those elements are bonded together in the compound. This can result in unique chemical and physical properties that differ from the individual elements.
