One isotope has 6 protons and 8 neutrons which reference names this isotope

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Which compound contain an iron with a 3+ charge

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.