All actinide series elements are radioactive in nature, they release a large amount of energy on radioactive decay.
31+ Actinide Family. The actinoid /ˈæktɪnɔɪd/ series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. Small quantities of plutonium and neptunium are present in uranium orders.
Actinide Series By Faith Whittle from media-temporary.preziusercontent.com
Discussed below are the differences between the elements in these two families, and their common properties. Analogous to the lanthanide contraction. The actinide series is the 15 chemical elements between actinium and lawrencium on the periodic table.
This results in increase in the effective nuclear charge which causes contraction in size of the electron cloud.
However, protactinium also closely resembles. It might be outdated or ideologically the name actinides denotes similarity to actinium. The two rows that are generally placed underneath the main periodic table are called the lanthanide series and the actinide. The only two actinides found in appreciable quantities in the earth's crust are thorium and uranium.
