1.

The radius of the Bohr orbit in the ground state of hydrogen atom is 0.5 Å. The radius of the orbit of the electron in the third excited state of \[H{{e}^{+}}\] will be                                          [MP PMT 2000]

A. 8 Å
B. 4 Å
C. 0.5 Å
D. 0.25 Å
Answer» C. 0.5 Å


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