The trend for electronegativity values decreases when a.) down a group and left to right across a period b.) up a group and left to right across a period c.) down a group and right to left across a period d.) up a group and right to left across a period

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.

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