  We use concurrence as an entanglement measure and experimentally demonstrate
the entanglement classification of arbitrary three-qubit pure states on a
nuclear magnetic resonance (NMR) quantum information processor. Computing the
concurrence experimentally under three different bipartitions, for an arbitrary
three-qubit pure state, reveals the entanglement class of the state. The
experiment involves measuring the expectation values of Pauli operators. This
was achieved by mapping the desired expectation values onto the local $z$
magnetization of a single qubit. We tested the entanglement classification
protocol on twenty seven different generic states and successfully detected
their entanglement class. Full quantum state tomography was performed to
construct experimental tomographs of each state and negativity was calculated
from them, to validate the experimental results.
