Metal-metal bonding is more frequent in $4d$ or $5d$ series than in $3d$ series due to

  • A

    their greater enthalpies of atomisation

  • B

    the large size of the orbitals which participates in the metal-metal bond formation

  • C

    their ability to involve both $ns$ and $(n - 1)\,d$ electrons in the bond formation

  • D

    the comparable size of $4d$ and $5d$ series elements

Similar Questions

The $\mathrm{E}^{\circ}$ value for the $\mathrm{Mn}^{3 *} / \mathrm{Mn}^{2+}$ couple is more positive than that of $\mathrm{Cr}^{3+} / \mathrm{Cr}^{2+}$ or $\mathrm{Fe}^{3+} / \mathrm{Fe}^{2 *}$ due to change of

  • [NEET 2024]

Assertion : The free gaseous $Cr$ atom has six unpaired electrons

Reason : Half-filled s orbital has greater stability.

  • [AIIMS 2004]

Mention the type of compounds formed when small atoms like $H$, $C$ and $N$ get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.

Melting point of  $FeCl_3$  and  $FeCl_2$  is

Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$,  $Mn = 25$,  $Co = 27$,  $Ni = 28$,  $Cu = 29)$