Electrons found in the outer shell (or energy level) of an atom are called electrons.
a. ionized
b. periodic
c. valence
d. relativistic

C) electrons encircling a nucleus with neutrons and protons

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.

Bthats what im doing to and i figured it out it is b