How does metallic character change across a period?

1 Answer
Jul 23, 2017

To a first approximation, ALL the elements are metallic.........With the exception of hydrogen, non-metals lie on the right hand side of the Periodic Table as we face it.


Look at the Periodic Table. Most of the elements are metals, i.e. most of the elements are NON-MOLECULAR materials in which the valence electrons are delocalized across the entire lattice such that the bulk material is malleable, and ductile, and TEND to form CATIONS - all metallic properties.

Of course, a few of the elements are non-metallic, and (sometimes) molecular materials, whose higher nuclear charge tends to polarize electron density, giving chemically oxidizing species species - certainly this is true of non-metallic oxygen and fluorine.