The d- and f- B...

Which has the highest ionic radii among given ions?
 $$Ce^{3+}, La^{3+}, Pm^{3+}$$ and $$Yb^{3+}$$ 

The magnetic moment of an ion in its +3 oxidation state is 3.85 BM. The number of unpaired electrons present in the ion is _____________.

IP values of Sc, Y and La are in the order:

Number of $$Cr-O$$ bonds in dichromate ion$$(Cr_{2}O_{7}^{2-})$$ is:

In dichromate ion ________________________.

Platinum, palladium and iridium are called noble metals because:

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

Transition elements show positive oxidation state, generally, due to:

Many lanthanoid elements are used to prepare:

Select the correct order with respect to paramagnetic property of the ions.