Question: (a) Moseley's experiments on X-rays emitted from atoms led to the concept of atomic numbers. Where exactly do these X-rays come from? Draw an energy-level

(a) Moseley's experiments on X-rays emitted from atoms led to the concept of atomic numbers. Where exactly do these X-rays come from? Draw an energy-level diagram to explain.
(b) Why are chemical and physical properties of the elements more closely related to atomic number than they are to atomic weight?

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