Atomic Structure Question 31

Question: Radius of the first Bohr’s orbit of hydrogen atom is [RPET 2000]

Options:

A) $ 1.06,{\AA} $

B) $ 0.22,{\AA} $

C) $ 0.28,{\AA} $

D) $ 0.53,{\AA} $

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Answer:

Correct Answer: D

Solution:

Bohr’s radius of the hydrogen atom $ r=\frac{n^{2}\times 0.529{\AA}}{z} $ ; where z = Atomic number, n = Number of orbitals



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