Question

0. If the kinetic energy of an electron in the ground state hydrogen atom is 2.2 x 10-18 J, calculate its momentum. (2 marks)

Answer 1

The formula defining the energy levels of a Hydrogen atom are given by the equation: E = -E0/n2, where E0 = 13.6 eV (1 eV = 1.602×10-19 Joules) and n = 1,2,3… and so on. The energy is expressed as a negative number because it takes that much energy to unbind (ionize) the electron from the nucleus.

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