What is the wavelength that has an energy of 4.90x10-19 J ? (Hint: Use algebraic manipulation to solve the energy equation for 2. You will get an answer in meters. Convert it to nanometers (10-m=1 nm).]
Express your answer with the appropriate units.

The answer is 4 i don't know if its right let me see.

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.