The atomic numbers of Lanthanides are from

A member of Lanthanide

The atomic numbers of three lanthanide elements X,Y and Z are 65,68 and 70 respectively. The basic character of their hydroxides will decrease as

Lanthanides are known as

Atomic numbers of Actinoides are from ____

Lanthanides are separated by

Lanthanides are separated by

The atomic number of an element is derived from.

The atomic number of an element is derived from the