What are the characteristics of group 1 metals? (11)

Soft shiny = easily cut MP decreases as bonds gets weaker Atomic radii increases Li, Na, K float on water bec of low densities reacts with air reactivity increases down group IE : decreases bec radii increases = weaker attraction Metallic character = increases electronegativity = decreases bec of bigger radii forms ionic bonds with group 17 2NA + Cl2 = 2NaCl