The radius of an electron in second stationary orbit in Bohr's atom is R . The radius of the third orbit will be

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The radius of an electron in second stationary orbit in Bohr's atom is

R

. The radius of the third orbit will be

PhysicsAtomic PhysicsNEET

Options:

A $3 R$
B $2.25 R$
C $9 R$
D $\frac{R}{3}$

Solution:

2721 Upvotes Verified Answer

The correct answer is:

2.25 R

r = 0.529 \frac{n^{2}}{Z}

R = \frac{0.529 \times 4}{Z}

R^{'} = \frac{0.529 \times 9}{Z}

\frac{R'}{R} = \frac{9}{4}

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