What is a cathode?

a. the electrode that releases ions into the solution
b. the electrode at which a reduction reaction occurs
c. the electrode that is oxidized in a redox reaction
d. the electrode that donates electrons to the system

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.