Option E) Th is correct answer. Thorium (Th) is inner transition element.
The components that make up the f-block are those where the 4f and 5f orbitals gradually fill up.
Although they are officially members of group 3, these elements are displayed separately in the f-block of the periodictable. Inner transition elements are another name for the f-constituent block's parts.
Lanthanoids and actinoids are the names for the two series of inner transitionelements that are 4f and 5f series, respectively.
The inner transition elementsU, Th, and Pa are excellent nuclear energy sources.
The inner transition elements' electronic configuration is 4f1-14 5d0-16 s².
Due to their uniform size and outer shell design, elements in a series would all have comparable qualities, making it difficult to distinguish them from one another.
If each gas sample has the same temperature and pressure, which has the greatest volume? Since hydrogen gas has the lowest molar mass of the set, 1 g will have the greatest number of moles and therefore the greatest volume. What is the Ideal Gas Law?
