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Which of the following element has the highest melting point?(a) Co(b) Zn(c) Ni(d) CrThe question was posed to me in semester exam.My question comes from Application of d and f-Block Elements topic in section D and F-Block Elements of Chemistry – Class 12

Answer» RIGHT choice is (d) Cr

Explanation: Of all the 3d transition ELEMENTS, chromium has the highest melting point. More the number of unpaired electrons in the d-block element, stronger is the METALLIC bond FORMATION. Since chromium CONTAINS more number of unpaired electrons, it has the highest melting point.


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