Why do the transition metals elements exhibit higher enthalpies if atomization ?
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The high enthalpies of atomization are due to large number of unpaired electrons in their atoms therefore they have stronger interatomic interactions and hence, stronger bonding between atoms.Thus, they have high enthalpies of atomization.
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TRANSITION ELEMENT HAVE HIGH EFFECTIVE NUCLEAR CHARGE AND A LARGE NUMBER OF VALENCE ELECTRON. THEREFORE THEY FORM VERY STRONG METALLIC BONDS OR METAL METAL BONDING WHICH ARISES DUE TO UNPAIRED ELECTRONS IN THE (n-1) d-SUBSHELL.AS A RESULT THE ENTHALPY OF ATOMISATION OF TRANSITION ELEMENT IS HIGH.
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