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
Wedding Anniversary Wedding Anniversary Wedding Anniversary is an Indian Hindi-language romantic drama film, directed by Shekhar S Jha, produced by Kumar V Mahant and Achut Naik, and presented by Bharat Shah. The film stars Nana Patekar and Mahie Gill in leading roles and was released on 24 February 2017. "Kahani" (Mahie Gill) and her husband "Nirbhay" (Priyanshu Chatterjee) had planned to celebrate their wedding anniversary in Goa but due to some last minute work "Nirbhay" stays back and "Kahani" has to travel alone. While she waits for her husband in Goa, she picks up a book to read written by her favourite