Bohr's radius for the fifth orbit of the hydrogen atom is :

13.225

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6.675

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13.742

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7.452

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Solution

The correct option is D 13.225
r $_{n}$ = r $_{0}$ $\times$ n $^{2}$
r $_{5}$ = (0.529 $\times$ 10 $^{- 10}$ ) $\times$ (5 $^{2}$ ) m
=13.25 $\times$ 10 $^{- 10}$ $\times$ (5) $^{2}$ m
=13.225 $\times$ 10 $^{- 10}$ m = 13.225 A

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Bohr's radius for the fifth orbit of the hydrogen atom is :

The correct option is D 13.225 rn = r0 × n2r5 = (0.529 × 10−10) × (52) m=13.25 × 10−10 × (5)2 m=13.225 × 10−10 m = 13.225 A

The correct option is D 13.225
r $_{n}$ = r $_{0}$ $\times$ n $^{2}$
r $_{5}$ = (0.529 $\times$ 10 $^{- 10}$ ) $\times$ (5 $^{2}$ ) m
=13.25 $\times$ 10 $^{- 10}$ $\times$ (5) $^{2}$ m
=13.225 $\times$ 10 $^{- 10}$ m = 13.225 A