Question

When hydrogen atomabsorbsan energy of 10.2 the change its angular momentum?

Answer 1

Given When a hydrogen atom absorbs an energy of 10.2 ev the change in its angular momentum is

Given When a hydrogen atom absorbs an energy of 10.2 ev the change in its angular momentum isNow after absorbing 10.2 ev of energy, the electron goes to its first excited state that is n = 2 from ground state n = 1

Thus change in angular momentum is

Thus change in angular momentum isL = n h / 2 π

Thus change in angular momentum isL = n h / 2 π  = 6.6 x 10^-34 / 2 x 3.14 where h is planck's constant

Thus change in angular momentum isL = n h / 2 π  = 6.6 x 10^-34 / 2 x 3.14 where h is planck's constantL = 1.05 x 10^-34 J S

Thus change in angular momentum isL = n h / 2 π  = 6.6 x 10^-34 / 2 x 3.14 where h is planck's constantL = 1.05 x 10^-34 J SSo orbital angular momentum of electron in hydrogen atom in nth state is given by 1.05 x 10^-34 J s