Who modified Bohr's theory by introducing elliptical orbits for electron path [CBSE PMT 1999; AFMC 2003]

Who modified Bohr's theory by introducing elliptical orbits for electr

1.	Who modified Bohr's theory by introducing elliptical orbits for electron path [CBSE PMT 1999; AFMC 2003]
A.	Hund
B.	Thomson
C.	Rutherford
D.	Sommerfield
Answer» E.

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Who modified Bohr's theory by introducing elliptical orbits for electron path [CBSE PMT 1999; AFMC 2003]

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