QJEEM22Chf43f: JEE Main 2022 Chemistry - Class 11 JEEM22Chf43f Solution: The longest wavelength of light that can be used for the…

The longest wavelength of light that can be used for the ionisation of lithium atom (Li) in its ground state is x $\times$ 10 ^{$-$ 8} m. The value of x is ___________. (Nearest Integer).

(Given : Energy of the electron in the first shell of the hydrogen atom is $-$ 2.2 $\times$ 10 ^{$-$ 18} J ; h = 6.63 $\times$ 10 ^{$-$ 34} Js and c = 3 $\times$ 10⁸ ms ^{$-$ 1})