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Sahay Sir > Question Answers > AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions > Chemistry > Chapter 2 - Atomic Structure > Calculate the energy required to excite one litre of hydrogen gas at 1 atm pressure and 298 K to the first excited state of atomic hydrogen. The energy for the dissociation of H-H bond is 436 kJ mol^−1 .

Calculate the energy required to excite one litre of hydrogen gas at 1 atm pressure and 298 K to the first excited state of atomic hydrogen. The energy for the dissociation of H-H bond is 436 kJ mol^−1 .

The work function (ϕ) of some metals are listed below. The number of metals which will show the photoelectric effect when the light of 300 nm wavelength falls on the metal is: