1.Which has a larger radius Ca atom or Ca+2 ion?
2.Which has a greater radius F atom or F- ion?
3.Which is the correct way of understanding the trend for Ionic radius Vs. Atomic radius?

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.