Metal-metal bonding is more frequent in $4d$ or $5d$ series than in $3d$ series due to
their greater enthalpies of atomisation
the large size of the orbitals which participates in the metal-metal bond formation
their ability to involve both $ns$ and $(n - 1)\,d$ electrons in the bond formation
the comparable size of $4d$ and $5d$ series elements
Which of the following statements is not true in regard to transition elements
Which of the following weighs less when weighed in magnetic field
Technetium, the element below manganese in the Periodic Table, would be expected to have high values for its
$(I)$ melting point $(II)$ boiling point $(III)$ density
How many unpaired electrons are there in $N{i^{2 + }}$
Which of the following compounds is metallic and ferromagnetic ?