Question

Where are lanthanides found?

Answer 1

1. Lanthanoids are also called rare earth metals present in the periodic table.
2. The elements range from atomic number $58-71$.
3. These elements rarely occur on the earth's crust.
4. The elements are found in “monazite sand” in the form of lanthanoid orthophosphate.
5. Lanthanoids are 15 in total and are present in third row 3B group.
6. The general electronic configuration of lanthanoids is:$4{\mathrm{f}}^{1-14}5{\mathrm{d}}^{0-1}6{\mathrm{s}}^2$.
7. Lanthanoids are lustrous and silvery in appearance.
8. They are soft and can be cut with a knife.
9.