The d & f Block Elements — Chemistry STD 12 Science — Question
Gujarat 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 $\mathrm{Fe}\left(3 d^6 4 s^1\right)$ has four unpaired electrons in 3 d -subshell. While $\mathrm{Cu}\left(3 \mathrm{d}^{10} 4 \mathrm{s}^1\right)$ has only one electron in the 4 s -subshell. Hence, metallic bonds in Fe are much stronger than those in Cu .
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