A beam of monochromatic light is used to excite the electron in Li^(++) from the first orbit to the third orbit. The wavelength of monochromatic light…

Question

A beam of monochromatic light is used to excite the electron in ${Li}^{+ +}$ from the first orbit to the third orbit. The wavelength of monochromatic light is found to be $x \times 10^{- 10} m$ . The value of $x$ is _____ .

[Given $h c = 1242 eV nm$ ]

MARKS Content Team · Accepted Answer

Correct answer: 114. Energy released in the transition will be, ΔE=13.6×Z^2(11^2-13^2 =13.6×3^2×8)/9 eV=108.8 eV Now energy of photon can be written as, hc/(λ)=108.8 eV ⇒λ=12400/108.8 Ao≈114 Ao

A beam of monochromatic light is used to excite the electron in ${Li}^{+ +}$ from the first orbit to the third orbit. The wavelength of monochromatic light is found to be $x \times 10^{- 10} m$ . The value of $x$ is _____ .
[Given $h c = 1242 eV nm$ ]

Solution

Relevant Questions

A beam of monochromatic light is used to excite the electron in Li++ from the first orbit to the third orbit. The wavelength of monochromatic light is found to be x×10-10 m. The value of x is _____ .[Given hc=1242 eV nm]

Solution

Relevant Questions

A beam of monochromatic light is used to excite the electron in ${Li}^{+ +}$ from the first orbit to the third orbit. The wavelength of monochromatic light is found to be $x \times 10^{- 10} m$ . The value of $x$ is _____ .
[Given $h c = 1242 eV nm$ ]