Why do transition elements exhibit higher enthalpy of atomisation?
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Ans➡️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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Solution — Because of large number of unpaired electrons in their atoms they have stronger interatomic interaction and hence stronger bonding between atoms resulting in higher enthalpies of atomisation.
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