Which is the best description of a scientific theory

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

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.