An element with atomic number 9 emits K_ n X-rays of wavelength λ. The atomic number of…
Chemistry · NEET · NTA Exams — Structure of Atom
An element with atomic number 9 emits \(K_{n}\) X-rays of wavelength λ. The atomic number of the element which emits \(K_{n}\) X-ray of wavelength 4λ is
- 4
- 5
- 6
- 7
Answer
(B) 5
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