How are mole and dozen similar?

Both are measurements of quantity. A dozen refers to twelve discrete objects, like a dozen doughnuts. A mole refers to a much larger quantity, 6.022 x 10^23 discrete objects, like a mole of carbon atoms. Both terms can technically be applied to anything that can be counted. However, a dozen is typically used to refer to items being sold (like baked goods, produce, or articles of clothing), while a mole is rarely used to refer to anything other than particles

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.