The radius of the Bohr orbit in the ground state of hydrogen atom is 0.5 A. The radius of the orbit of the electron in the third excited state of He+ will be
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a
8Å
b
4Å
c
0.5Å
d
0.25Å
answer is B.
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Detailed Solution
For third excited state, n=4 rn=r0n22 or r1=0.5×4×42Å=4Å
The radius of the Bohr orbit in the ground state of hydrogen atom is 0.5 A. The radius of the orbit of the electron in the third excited state of He+ will be