The d- and f- B...

The correct order of ionic radii of Ce, La, Pm, and Yb in +3 oxidation state is:

Identify the correct Structure of dichromate ion.

Which of the following statements concerning lanthanide elements is false?

Which ion has magnetic moment $$5.90$$ B.M?

Which of the following ion is paramagnetic?

Which of the following ion has the maximum theoretical magnetic moment?

The radius of $$La^{3+}$$(Atomic number of $$La=57$$) is $$1.06\mathring A$$. Which one of the following given values will be closest to the radius of $$Lu^{3+}$$ (Atomic number of $$Lu=71$$)?

Which of the following has highest value of magnetic moment?

Arrange $$Ce^{3+}$$, $$La^{3+}$$, $$Pm^{3+}$$, and $$Yb^{3+}$$ in increasing order of their ionic radius:

Among $$V(Z=23)$$, $$Cr(Z=24)$$, $$Mn(Z=25)$$ and $$Fe(Z=26)$$, which will have the highest magnetic moment?