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The d & f Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
Question
$Fe$ has higher melting point than $Cu.$ Why?
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Answer

This is because $Fe (3d^6 \ 4s^1)$ has four unpaired electrons in $3d-$subshell. While $Cu (3d^{10} \ 4s^1)$ has only one electron in the $4s-$subshell.
Hence, metallic bonds in $Fe$ are much stronger than those in $Cu.$

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