Which of the two statements is true? Statement A: X – rays are electromagnetic waves of very short wavelength. Statement B: The maximum number of electrons that can be accommodated in the L shell is 8.
Answers
Explanation:
B) The maximum length number of electron that can be be accommodated in the L shell is 8
Answer:
pt
Explanation:
Characteristic X-rays are produced when an element is bombarded with high-energy electrons. When a high-energy electron (the incident electron) strikes a bound electron (the target electron) in an atom, the target electron is ejected from the inner shell of the atom. After the electron has been ejected, the atom is left with a vacant energy level, also known as a core hole. Outer-shell electrons then fall into the inner shell, emitting quantized photons with an energy level equivalent to the energy difference between the higher and lower states. Each element has a unique set of energy levels, and thus the transition from higher to lower energy levels produces X-rays with frequencies that are characteristic to each element.
When an electron falls from the L shell to the K shell, the X-ray emitted is called a K-alpha X-ray. Similarly, when an electron falls from the M shell to the K shell, the X-ray emitted is called a K-beta X-ray.