PhysicsEasy183×since 2002Q5986Consider an electron in a hydrogen atom revolving in its second excited state (having radius 4.65 Ao\mathop A\limits^oAo). The de-Broglie wavelength of this electron is :A6.6 Ao\mathop A\limits^oAoB3.5 Ao\mathop A\limits^oAoC9.7 Ao\mathop A\limits^oAoD12.9 Ao\mathop A\limits^oAoCheck answerSkip