Inner transition metals (inner transition elements)
F-block
Americium is in the Actinide family of elements. It is a synthetic element with the symbol Am and atomic number 95. Actinides are a series of elements in the periodic table that have properties similar to actinium.
Yes, most actinides are synthetic elements, meaning they are not naturally found on Earth and need to be created in a laboratory through nuclear reactions. The only exception is uranium, which is the only actinide that occurs naturally in significant quantities on Earth.
The smallest atomic number and atomic weight for a lanthanide is lanthanum itself, element 57. The smallest atomic size is lutecium element 71; the lanthanides steadily decrease in atomic radius through the series, and the smallest is the last of them.
Plutonium is an artificial chemical element, radioactive, unstable, toxic, solid, metal, member of the actinides group, Olivette very important for nuclear weapons and nuclear fuels, etc.
Magnets attract ferromagnetic metals, alloys, oxides or other compounds; examples are: iron, cobalt, nickel, dysprosium, iron oxides, some compounds of lanthanides etc.
Element groups
Wht is the difference between Lanthanides and Actinides?
Actinides and lanthanides lose electrons and form cations.
The f-block elements in period 7 are known as the actinides.
Rare Earth elements or lanthanides are placed in the period 6 of the periodic table of Mendeleev. Actinoids are placed in the period 7 of the periodic table of Mendeleev.
The two periods below the periodic table are known as the lanthanides and actinides. These series consist of elements that fall within the f-block of the periodic table.
The lanthanides get their name from the element lanthanum, which was the first in the series to be discovered. The actinides get their name from actinium, which was the first element in this series to be discovered.
describe the complex formation by lanthanides?
The densities of the lanthanides generally have less variability compared to the densities of the actinides. This is because the lanthanides are more similar in size and electronic structure, leading to more consistent densities. In contrast, the actinides exhibit larger variations in density due to differences in atomic structure and electron configurations.
Lanthanides and actinides occupy period 6 and 7, respectively, due to their electron configurations. Lanthanides have their outermost electrons in the 5d sublevel, which fills in period 6, while actinides have their outermost electrons in the 5f sublevel, which fills in period 7. This results in their placement in these periods of the periodic table.
Lanthanides and Actinides are placed separately as the properties of these elements is quite different from the elements in periodic table.
Group 12 elements on the periodic table are not lanthanides or actinides. They are transition metals, also known as the zinc group, which includes elements like zinc (Zn), cadmium (Cd), and mercury (Hg). Lanthanides and actinides are separate groups that are located in the inner transition metals section of the periodic table.