This includes Spring Branch, Alief, Cy-Fair, Katy, Sugar Land, Missouri City, Spring, Tomball, and The Woodlands. We are the official credit union of the Houston Texans. Making a First-Rate financial difference in our members lives.
1 Allotropes are forms of the same element which exhibit different physical properties. 2  Elements such as carbon, oxygen, phosphorus, tin and sulfur, display allotropy.
The allotropes of carbon. Three forms (or 'allotropes') of pure carbon are diamond, graphite and buckminster fullerene (or 'buckyballs'). In all three allotropes the carbon atoms are joined by strong covalent bonds but in such different arrangements that the properties of the allotropes are very different.