Which group of diamagnetic transition metals exhibits trends in density and melting points that don't match the same trends seen in other groups? A. Group 12
B. Group 3
C. Group 11
D. Group 7

Group 12

Explanation:

Group 12 transition metals include; zinc cadmium, mercury and copernicium. Because of their striking difference in property when compared to other transition elements, they are sometimes called post-transition elements.

These elements possess completely filled ns and nd orbitals hence they are diamagnetic. They have the lowest melting points and densities among all transition metals. Their densities in gcm^-3 are; Zn (7.14), Cd(8.65) and Hg (13.5). We can see that unlike other transition metal groups, their densities vary only within a narrow margin hence they have properties slightly different from other transition elements.

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