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Question: Answered & Verified by Expert
In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomisation of zinc is the lowest, i.e., 126 kJ mol–1. Why?
Chemistryd and f Block ElementsNEET
Options:
  • A because in the formation of metallic bonds, no electrons from 3d-orbitals are involved in the case of zinc unlike the rest of the series
  • B because Zinc has a smaller atomic radius compared to scandium.
  • C because Zinc has a completely filled d-subshell in its ground state electron configuration.
  • D because Zinc exhibits fewer oxidation states compared to scandium.
Solution:
1541 Upvotes Verified Answer
The correct answer is: because in the formation of metallic bonds, no electrons from 3d-orbitals are involved in the case of zinc unlike the rest of the series
Correct Option is : (A)
because in the formation of metallic bonds, no electrons from 3d-orbitals are involved in the case of zinc unlike the rest of the series

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