Metals share a number of properties we all recognize. Less well know are properties of ductility and malleability . Clearly, ductility has to do with the way the metal solid can be deformed without tearing. Metallic Conductivity Conductivity and luster are, in fact, related. Metals conduct because their electrons are easily shoved around throughout the solid by electric fields.
Metals are shiny because they reflect light well.
Light is known to include oscillating electric fields to which a metal's electrons dance uninhibitedly, like Snoopy on the top of his dog house. But the very easy induction of that dance means that the metals reradiate the light just as easily. Hence a shiny mirror finish. But most metals have reasonably high melting points. In contrast, those elements in PINK on the Periodic Table are nonmetals .