1.

Explain gives reason. (a) Transition metal and many of their compounds show paramagnetic behavior. (b) The enthalpies of atomisation of the transition metal are high . (c) The transition metals generally from coloured compounds.

Answer» (b) Enthalpy of atomisation may be defined as the amount of heat energy needed to break the metal lattice of a crystalline metal into free atoms. Greater the magnitude of lattice energy, more will be the value of enthalpy of atomisation. The transition metals have high enthalpies of atomisation because teh metallic bonds present are quite strong due to presence of large number of half-filled atomic orbitals. For more detail, consult text-part.


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