11. Polypyridines are multidentate ligands that confer characteristic properties to the metal complexes that they form. 12. ESCs have the characteristic properties of a stem cell : self-renewal and differentiation. 13. A characteristic property of PV numbers is that their powers approach integers at an exponential rate. 14. Randomness is a characteristic property of future events and makes them either occur or not occur. 15. Under a standard set of conditions, the melting point of a substance is a characteristic property . 16. A "'characteristic property "'is a sample being observed is large or small. 17. Examples of characteristic properties include freezing / melting point, boiling / condensing point, density and solubility. 18. Hence the ordered pair can be taken as a primitive notion, whose associated axiom is the characteristic property . 19. Different from adverbs, particles do not occur isolated like a constituent and do not present adverbial characteristic properties . 20. The characteristic property of the von Neumann measurement scheme is that repeating the same measurement will give the same results.