Q.

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

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a

their greater enthalpies of atomisation

b

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

c

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

d

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

answer is A.

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Detailed Solution

Metal-metal bonding is more frequent in 4d or 5d series than in 3d series due to their greater enthalpies of atomisation.

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