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1. |
The Bohr orbit radius for the hydrogen atom \[(n=1)\] is approximately \[0.530{AA}\]. The radius for the first excited state \[(n=2)\] orbit is [CBSE PMT 1998; BHU 1999] |
A. | \[0.13{AA}\] |
B. | \[1.06{AA}\] |
C. | \[4.77{AA}\] |
D. | \[2.12{AA}\] |
Answer» E. | |