Crystal structure "white tin" respectively. Two more allotropes, γ and σ, exist at temperatures above 161 °C and pressures above several GPa. White tin is metallic, and is the stable crystalline form at or above room temperature. Below 13.2 °C, tin exists in the gray form, which has a diamond cubic crystal structure, similar to diamond, silicon or germanium. Gray tin has no metallic properties at all, is a dull gray powdery material, and has few uses, other than a few specialized semiconductor applications. Although the α–β transformation temperature of tin is nominally 13.2 °C, impurities (e.g. Al, Zn, etc.) lower the
A Christmas Wedding A Christmas Wedding A Christmas Wedding is a 2006 Lifetime Television film directed by Michael Zinberg and starring Dean Cain, Sarah Paulson, and Eric Mabius. Lovebirds Emily and Ben are just a month away from their Christmas Day wedding, which will also be the second anniversary of the day they met. But when Emily (who's been dreaming of the picture-perfect wedding her whole life) gets called away for work, it's all on Ben to handle the loose ends before the big day. With the bulk of the wedding planned, what could go wrong? Well, with Ben in charge — a