An electron is moving in Bohr's fourth orbit. Its de Broglie wavelengt – McqOptions

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1.	An electron is moving in Bohr's fourth orbit. Its de Broglie wavelength is λ . What is the circumference of the fourth orbit?
A.	2/λ
B.	2λ
C.	4λ
D.	-4/λ
Answer» D. -4/λ

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