Calculate the enthalpy of the reaction N2 + 3H2 2NH3, where the enthalpy of N, is 30.16 kcal, the
enthalpy of H, is 20.82 kcal, and the enthalpy of NH3 is 29.01 kcal.

Copper, silver, aluminum, cobalt, chromium, mercury 

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.

True is ur answer : )