🛠️ JEE🧪 Chemistry

For \({\mathrm{He}}^{+}\), a transition takes place from the orbit of radius \(105.8 \mathrm{~pm}\) to the orbit of radi…

Q1

For \({\mathrm{He}}^{+}\), a transition takes place from the orbit of radius \(105.8 \mathrm{~pm}\) to the orbit of radius \(26.45 \mathrm{~pm}\). The wavelength (in nm ) of the emitted photon during the transition is _____

[Use: Bohr radius, \(\mathrm{a}=52.9\mathrm{pm}\)

Rydberg constant, \({\mathrm{R}}_{\mathrm{H}}=2.2\times {10}^{-18}\mathrm{J}\)

Planck's constant, \(\mathrm{h}=6.6\times {10}^{-34}\mathrm{J}\mathrm{s}\)

Speed of light, \(\mathrm{c}=3\times {10}^{8}\mathrm{m}{\mathrm{s}}^{-1}\)]

[JEE Advanced 2023, Paper-2]

a

10

b

20

c

30

d

40

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