What happens during radioactive decay? A. An unstable nucleus loses particles until it becomes stable.
B. An unstable nucleus gains neutrons to make it stable.
C. An unstable nucleus gains mass until it becomes stable.
D. An unstable nucleus absorbs radiation to make it stable.

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.