SATHEE: Atoms And Nuclei Question 425

Atoms And Nuclei Question 425

Question: According to Bohr’s theory the radius of electron in an orbit described by principal quantum number n and atomic number Z is proportional to

Options:

A) $Z^{2} n^{2}$

B) $\frac{Z^{2}}{n^{2}}$

C) $\frac{Z^{2}}{n}$

D) $\frac{n^{2}}{Z}$

Show Answer

Answer:

Correct Answer: D

Solution:

$r = \frac{ε_{0} n^{2} h^{2}}{π Z m e^{2}}; ∴ r \propto \frac{n^{2}}{Z}$

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