Chemistry, asked by Anonymous, 9 months ago

what are inner transition elements? why are they so called ? how many series of inner transition elements are present in the modern periodic table? write their names and atomic number which of these two series contains only radioactive elements? name any three radioactive elements which are used in atomic bombs please don't give wrong answers please don't copy it from Google because that answers are wrong.. you can"t find this question in google because this question is made by me .​

Answers

Answered by srdinakar2005
2

Answer:

The actinoid series consists of 15 elements from actinium (symbol Ac, atomic number 89) to lawrencium (symbol Lr, atomic number 103). These inner transition series are covered under rare-earth element and actinoid element.

...

General properties of the group.

1st main series

iron

symbol Fe

atomic number 26

atomic mass 55.845

Explanation:

f-block elements are called inner transition elements or inner transition matals. Inner transition metals are usually put at the bottom of the periodic table.

An inner transition metal (ITM) of chemical elements on the periodic table. They are normally shown in two rows below all the other elements. They include elements 57-71, or lanthanides, and 89-103, or actinides. The lanthanides are very similar, and the actinides are all radioactive.

Answered by 191147
2

Answer:

The elements constituting the f-block are those in which 4f and 5f orbitals are progressively filled. These elements are formal members of group 3 but are shown separately as f-block of the periodic table. The elements of f-block are also called inner transition elements.

The two series of inner transition elements that are 4f and 5f series are known as lanthanoids and actinoids respectively. The inner transition elements such as U, Th and Pa are providing good sources of nuclear energy In the inner transition elements the third last shell is filled with electrons.

The inner transition elements form coloured ions.

The inner transition elements show variable valencies.

Actinides are radioactive by nature.

The inner transition elements beyond atomic number 92 up to 103 are synthetic as well as radioactive. They are not found in nature in the earth’s crust.

Similar questions