If you managed to isolate a single atom of lithium, how many neutrons would it probably have in its nucleus? Explain. Explain why the average atomic masses of the elements listed in the periodic table are usually not whole numbers.

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.