Atomic Models
Physics ⇒ Modern Physics
Atomic Models starts at 9 and continues till grade 12.
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Calculate the radius of the first Bohr orbit (n=1) for hydrogen atom using the formula rn = n2a0, where a0 = 0.53 Å.
Calculate the wavelength of the photon emitted when an electron in a hydrogen atom jumps from n=3 to n=2. (Use E = 13.6 eV, hc = 1240 eV·nm)
Describe one way in which the quantum mechanical model of the atom differs from Bohr's model.
Explain why Rutherford's model was unstable according to classical physics.
In the context of atomic models, what is meant by 'quantization of angular momentum'?
State one major limitation of Bohr's atomic model.
State the main difference between the Bohr model and the quantum mechanical model of the atom.
The energy of an electron in the nth orbit of a hydrogen atom is given by En = -13.6 eV/n2. Calculate the energy of the electron in the second orbit (n=2).
Which experiment provided evidence for the existence of the atomic nucleus?
Which postulate of Bohr's model explains the stability of atoms?
Who proposed the first atomic model based on indivisible particles?
