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Give reason: Chemistry of actinoids is much more complicated than that . . . Hint: Actinoids or actinides are 15 consecutive chemical elements in the periodic table from actinium to lawrencium As a group, they are significantly large because of their radioactivity Although several members of these groups are man-made elements like uranium, they occur naturally
Chemistry of actinoids is complicated as compared to lanthanoids. Give . . . Chemistry of actinoids is more complicated than lanthanoids because (i) actinoids show greater number of oxidation states due to the comparable energies of 5f, 6d and 7s orbitals (ii) The actinoids are radioactive and the study of their chemistry in the laboratory is difficult
Actinoid contraction is greater from element to element than lanthanoid . . . In actinoids, 5f orbitals are filled These 5f orbitals have a poorer shielding effect than 4f orbitals (in lanthanoids) Thus, the effective nuclear charge experienced by electrons in valence shells in case of actinoids is much more that that experienced by lanthanoids
Why is the chemistry of actinoids more complicated compared to . . . The chemistry of actinoids is more complex due to a wide range of oxidation states and the complications arising from their radioactivity The occurrence of various oxidation states and the challenges posed by radioactivity make the study of actinoids more intricate
Give two reasons for the following Chemistry of actinoids is complica - Reason 1: Actinoids are radioactive, leading to complex and unpredictable chemical behavior - Reason 2: The 5f orbitals of actinoids are more exposed, allowing for greater interaction with the environment compared to the deeply buried 4f orbitals of lanthanoids Chemistry of actionoids is complicated as compared to lathanoids Give reason
Comparison of the solution chemistry of the actinides and lanthanides Seaborg's model of an actinide series with curium as the midpoint (f7) element stressed a close similarity to the analogous lanthanide series This hypothesis was extremely helpful in predicting the properties to be expected for new actinide elements
Compare the chemistry of the actinoids with that of lanthanoids with . . . Chemical reactivity - In the lanthanide series, the earlier members of the series are more reactive They have reactivity that is comparable to Ca With an increase in the atomic number, the lanthanides start behaving similar to Al Actinoids, on the other hand, are highly reactive metals, especially when they are finely divided