Assertion: The metals of 4d and 5d greater entalpies of atomisation than the corresponding elements of the 3d series.
Reason: The metal-metal bond in 4d and 5d series are stronger than those in the 3d series.

(A) Metals of 4d and 5d series have greater enthalpies of atomization than the corres- ponding 3d series. (R) 4d and 5d series elements are smaller than 3d series

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

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

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

Name the first element of the 3d transition metal series.

How would you account for the following? (i) Cr^(2+) is reducing in nature while with the same d-orbital configuration (d^14) Mn^(3+) is an oxidising agent. (ii) In a transition series of metals, the metal which exhibits the greatest number of oxidation states occurs in the middle of the series. (iii) Metal-metal bonding is more frequent for the 4d and the 5d series of transition metals than for the 3d series.

Why is enthalpy of atomisation is the lowest for Zn in 3d series of transition elements ?

How heat of atomisation changes in 3d-series elements are stable?

Why is enthalpy of atomisation is the lowest for Zn in 3d series of transition elements ?