1. Electron A falls from energy level X to energy level Y and releases blue light. Electron B falls from energy level Y to energy level Z and releases red light. Which transition, from X to Y or from Y to Z, has a greater energy difference? Explain your answer and how you arrived at it. Use a diagram of the electromagnetic spectrum.
2.An atom of silicon has a mass number of 28 and an atomic number of 14. How many protons and how many neutrons are in this atom? Show your calculation
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