Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The longest wavelength of light that can be used for the ionisation of lithium atom 
in its ground state is 
. The value of 
is (Nearest Integer) (Given: Energy of the electron in the first shell of the hydrogen atom is 
; 
and 
)
Text Solution
Verified by ExpertsThe correct answer is:
4
(4) We can -not calculate I.E. of lithium atom.
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