Which of the following scientists first postulated that the sharp lines in the emission spectra of elements were caused by electrons going from high-energy levels to low-energy levels?
A)Rutherford
B)Pauli
C)Hund
D)de Broglie
E)Bohr

Question

Quizplus · Accepted Answer

Danish physicist Niels Bohr was the first to postulate that the sharp lines in the emission spectra of elements were caused by electrons going from high-energy levels to low-energy levels. Bohr's model of the atom also introduced the concept of quantized energy levels, which helped to explain why different elements emit distinct spectral lines.

Which of the Following Scientists First Postulated That the Sharp