Which of the following element has the highest melting point?
A
Co
B
Zn
C
Ni
D
Cr
Correct Answer: Cr
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.