Question

name the group to which lanthanose and actones belongs . give their atomic no.

Answer 1

The lanthanides and actinides form a group that appears almost disconnected from the rest of the periodic table. This is the f block of elements, known as the inner transition series. This is due to the proper numerical position between Groups 2 and 3 of the transition metals.

The two rows that are generally placed underneath the main Periodic Table are called the lanthanide series and the actinide series. These two rows are produced when electrons are being added to f orbitals. Therefore, this block of elements are referred to as the "f block".

in the radii of atoms of the lanthanide elements as the atomic number increases

Answer 2

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