In +2 oxidation state, which of the following lanthanoids act as reducing agents?

Among the following the incorrect statement about transition metals is

Observe the following ions

$$ \mathrm{V}^{2+}, \mathrm{Zn}^{2+}, \mathrm{Cu}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Fe}^{3+}, \mathrm{Ti}^{3+}, \mathrm{Sc}^{3+}, \mathrm{Ti}^{4+}, \mathrm{Ni}^{3+}, \mathrm{Co}^{3+}, \mathrm{Cu}^{+} $$

How many ions in the above list have zero magnetic moment?

The order of melting points of $\mathrm{Cr}, \mathrm{Mo}$ and W is