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# Bohr model: energy levels

## Problem

What is the (start text, i, end text) kinetic energy of the electron, and the (start text, i, i, end text) potential energy of the atom in the state, n, equals, 2?
(start text, i, end text) Kinetic energy, K, start subscript, 2, end subscript, equals
start text, e, V, end text
(start text, i, i, end text) Potential energy, U, start subscript, 2, end subscript, equals
start text, e, V, end text
Stuck?
Stuck?