Which pair of ions can form an ionic bond with each other and why?
a) cu+ and ag+; they are both metal ions.
b) s2- and o2-; they have like charges.
c) br- and at-; they are both halogen ions.
d) li+ and br-; they have unlike charges.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.