Who developed the quantum theory in 1900 and has a constant named for him?
A) de Broglie
B) Bohr
C) Planck
D) Einstein

Name: Who developed the quantum theory in 1900 and has a constant named for him? A) de Broglie B) Bohr C) Planck D) Einstein
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Max Planck developed the quantum theory in 1900, introducing the idea of quantized energy levels. The Planck constant, which is fundamental to quantum mechanics, is named after him.

Who Developed the Quantum Theory in 1900 and Has a Constant