Cadmium is highly toxic.
Iridium is used as a catalyst in the production of acetic acid.
because precent
Dmitri Mendeleev was able to predict the properties of germanium by leaving gaps in his periodic table for elements that were yet to be discovered. He noticed a pattern in the properties of known elements and used this pattern to predict the existence and properties of undiscovered elements, such as germanium.
The activity series in chemistry helps predict how elements will react with each other in redox reactions. Elements higher in the series are more reactive and will replace elements lower in the series in a reaction. By comparing the positions of elements in the activity series, one can predict which elements will undergo redox reactions and the direction of the reaction.
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.
Mendeleev's periodic table allowed for the prediction of the properties of unknown elements by identifying gaps in the table where elements had not yet been discovered. By examining the properties of neighboring elements, Mendeleev was able to predict the properties of the missing elements and suggest their existence. His periodic table provided a framework for organizing elements based on their atomic mass and chemical properties, which allowed for the accurate prediction of the properties of undiscovered elements.
because precent
they have same numbers of electrons.
Dmitri Mendeleev was able to predict the properties of germanium by leaving gaps in his periodic table for elements that were yet to be discovered. He noticed a pattern in the properties of known elements and used this pattern to predict the existence and properties of undiscovered elements, such as germanium.
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The activity series in chemistry helps predict how elements will react with each other in redox reactions. Elements higher in the series are more reactive and will replace elements lower in the series in a reaction. By comparing the positions of elements in the activity series, one can predict which elements will undergo redox reactions and the direction of the reaction.
Dmitri Mendeleev
Mendeleev was able to predict the properties of the elements that were not discovered at that time. He left gaps for these elements in his Periodic Table.
bc the valence e-
The electronegativity of the elements help this prediction.
mixing the five basic elements
The Periodic Table can be used to predict the properties of elements based on their location within the table, such as atomic number, group number, and period. It can also help determine the elements' chemical reactivity, bonding tendencies, and physical characteristics. Additionally, the Periodic Table allows for the identification of patterns in the behavior of elements and can aid in predicting their potential uses and interactions in chemical reactions.
Dmitri Mendeleev