low first ionization energy and low electronegativity
Someone suggested that this answer contained gibberish... But whoever answered it did so correctly. When you start a question with "Which" you should provide choices. If you are looking for "physical" characteristics of metals they might be that metals are lustrous, malleable, ductile, and conductive. But all of these properties stem from the molecular properties of the atoms such as low first ionization energy and low electronegativity. So... not gibberish.
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That is called an alloy.
There are a number of ways in which a metal can be differientiate a metal from a non-metals, these involve contrasting the properties between metals and non-metals and testing them to distinguish them from one another. Some contrasting properties between metals and non-metals: 1.) Metals conduct electricity whereas non-metals do not. 2.) Metals are shiny whereas non-metals are not. 3.) Metals are malleable whereas non-metals are brittle. 4.) Metals often have a higher boiling/melting point than non-metals. 4.) Metals are hard whereas non metals are not.
What are the properties of metals and non-metals? basically :Properties of Metals; *Tensıle strength , *shear strength , *compressıve strength , *ductility,*malleability, *toughness,*corrosion , *electric and thermal conductivity, *brittleness. *Luster * Conductivityand you asked non metals but you have to decide what kind of material what you asked there are 6 main kind of matter like ceramics , composites , carbons , metals&alloys , polymers...=== ===
Elements in the same family-assuming family means classifications such as non-metals, metals-have similar properties.
Metalloids are the border lines between the metals and the nonmetals in the Periodic Table.