The ratio of radii of first three orbits in hydrogen atom is? – McqOptions

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1.	The ratio of radii of first three orbits in hydrogen atom is?
A.	1 : 4 : 9
B.	1 : 2 : 3
C.	1 : 2 : 4
D.	9 : 4 : 1
Answer» B. 1 : 2 : 3

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