Which statement is not correct regarding radiation? Nuclear reactions arise from an atom's nucleus. Alpha, Beta, and Gamma are types of radiation. Most of the earth's nuclear energy comes from the Sun. Radioactive elements have an unbalanced number of protons and electrons.

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.

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom.